Chapter 01
Human Anatomy & Physiology
Unit I · Biology & Human Health. Highest repeat rate across all MPT papers — blood, digestion, vitamins, organs.
Practice MCQs · FPSC Pattern
Commit to a choice before opening the explanation. Surface familiarity is the #1 reason candidates fail in the exam hall.
- Q1
All blood cells in the human body are produced in the:
- A.Liver
- B.Spleen
- C.Heart
- D.Bone marrow
Show explanation
Bone marrow is the site of haematopoiesis. Spleen filters blood; the liver does NOT produce blood cells in adults (it does briefly during fetal development).
MPT 2023
- Q2
The organ responsible for PRODUCING bile used in fat digestion is the:
- A.Liver
- B.Gallbladder
- C.Small intestine
- D.Pancreas
Show explanation
Most exploited biology trap: the Gallbladder STORES bile; the Liver PRODUCES it.
MPT 2024
- Q3
Connective tissues that attach MUSCLES to BONES are called:
- A.Ligaments
- B.Cartilage
- C.Tendons
- D.Fascia
Show explanation
Tendon = muscle to bone. Ligament = bone to bone. FPSC swaps these in the options every cycle.
MPT 2023
Full Chapter Notes
Source · FPSC Trap Decoder · CSS MPT Smart Notes (2026 Edition)
MPT Weightage: 5–7 Marks · Difficulty: Medium · Confirmed Past Papers: 2022 · 2023 · 2024 · 2025
Trend Alert. The human body is tested as a biological machine. FPSC focuses on vital statistics (RBC lifespan, blood groups, body temperature), the blood lifecycle (factory → function → graveyard), and structural connectors (tendons vs ligaments). Blood-measurement instruments have appeared in every paper since 2022.
1. High-Yield Fact Snapshot
| FPSC-Tested Fact | Correct Answer | Year Tested |
|---|---|---|
| Instrument for blood pressure | Sphygmomanometer | 2022 (Repeated) |
| Rarest blood group in humans | AB Negative (None of these) | 2022 (Repeated) |
| Lifespan of Red Blood Cells (RBCs) | 120 days | 2022 (Repeated) |
| Instrument to measure oxygen in blood | Pulse Oximeter (None of these) | 2022 |
| Fluid portion of blood | Plasma | 2023 |
| Study of human body cells | Cytology | 2024 (Repeated) |
| Excessive bleeding — deficiency of? | Vitamin K | 2024 (Repeated) |
| Blood pressure measured by? | Sphygmomanometer | 2022 (Repeated) |
| Muslim scientist — concept of blood pressure | Ibn al-Nafis | 2025 (New) |
2. Core Concepts
For the MPT, the human body is tested as an integrated machine. Focus on three clusters: (1) vital statistics — specific numbers the FPSC expects you to memorize; (2) the blood lifecycle — where blood is made, how long it works, and where it is destroyed; and (3) structural connectors — the tendons and ligaments that the examiner consistently confuses in trap questions.
Red Blood Cells are manufactured in the Bone Marrow → circulate for 120 days → are destroyed and recycled in the Spleen. The Heart only pumps — it does not make blood.
Cytology is the branch of biology that specifically studies the structure and function of cells. It is distinct from Physiology (study of body functions) and Anatomy (study of body structure). This distinction appeared directly in MPT 2024.
3. Body System Matrix
| System | Key Component | FPSC Strategic Fact | Examiner's Note |
|---|---|---|---|
| Circulatory | Bone Marrow | Factory where all RBCs, WBCs, and Platelets are produced | Heart = pump only |
| Circulatory | Spleen | Graveyard where old RBCs are broken down after 120 days | Not the factory |
| Circulatory | Blood Plasma | The fluid portion of blood — liquid in which cells are suspended | Appeared MPT 2023 |
| Digestive | Mouth / Saliva | Ptyalin (Salivary Amylase) begins starch digestion here | Absorption in small intestine |
| Digestive | Small Intestine | 90% of nutrient absorption; lined with Villi | Stomach digests proteins only |
| Respiratory | Diaphragm | Muscular sheet driving breathing; separates chest from abdomen | Contracts downward on inhale |
| Respiratory | Lungs | Right = 3 lobes; Left = 2 lobes (Cardiac Notch for heart) | Left is smaller |
| Nervous | Neuron | Dendrites receive signals; Axon transmits them — one direction only | Basic unit of nervous system |
| Skeletal | Femur | Longest, heaviest, strongest bone — the thigh bone | Smallest = Stapes (ear) |
| Sensory | Retina | Light-sensitive screen at back of eye; contains Rods and Cones | Rods = dim light; Cones = colour |
| Sensory | Cornea | Transparent outer layer; only part transplanted in eye donation | Avascular — no blood vessels |
4. Vital Statistics — Non-Negotiable Numbers
FPSC frequently asks for specific numerical values. These must be memorized exactly.
| Biological Parameter | Correct Value | FPSC Note |
|---|---|---|
| RBC Lifespan | 120 days | Appeared MPT 2022 — answer is 120, not 90 or 180 |
| Heart Rate (resting adult) | 72 beats per minute | 60–100 is normal range; 72 is the standard MPT answer |
| Body Temperature | 37°C / 98.6°F | Both units appear in questions — memorize both |
| Normal Blood pH | 7.4 (slightly alkaline) | Acidic = below 7.0; Alkaline = above 7.0 |
| RBC Count (healthy adult) | ~5 million per mm³ | Low count = Anemia |
| Heart Weight (adult male) | ~300 g | Women ~200 g — the 300 g figure appears in trap questions |
| Rarest Blood Group | AB Negative | Correct MPT answer is 'None of these' when options show A/B/O only |
5. Structural Connectors — The Tendon vs. Ligament Rule
A fibrous connective tissue that attaches Muscle to Bone. Mnemonic: T-MB (Tendon = Muscle → Bone). Example: Achilles Tendon connects the calf muscle to the heel bone.
A fibrous connective tissue that attaches Bone to Bone. Mnemonic: L-BB (Ligament = Bone → Bone). Example: ACL (Anterior Cruciate Ligament) connects the femur to the tibia at the knee.
| Tissue | Connects | Injury Type | Memory Hook |
|---|---|---|---|
| Tendon | Muscle → Bone | Strain (muscle/tendon) | T-MB | Tension cord |
| Ligament | Bone → Bone | Sprain (ligament) | L-BB | Link |
| Cartilage | Joint cushioning | Wear and tear | Shock absorber |
6. Measurement Instruments — Appeared Every Paper
This topic has appeared in every MPT paper from 2022 to 2025. Know the correct instrument for each biological measurement.
| What is Measured | Correct Instrument | FPSC Note |
|---|---|---|
| Blood Pressure | Sphygmomanometer | Barometer and Hydrometer are wrong — classic trap |
| Oxygen Level in Blood | Pulse Oximeter | Answer is 'None of these' when Spirometer/Barometer are listed |
| Body Temperature | Thermometer (Clinical) | 37°C normal; 98.6°F equivalent |
| Lung Capacity / Airflow | Spirometer | NOT for oxygen level — common confusion |
| Rainfall | Rain Gauge | Barometer = atmospheric pressure, NOT rainfall |
The Sphygmomanometer Trap. FPSC presents options as 'Barometer / Hydrometer / Nanometer / None of these.' The correct instrument (sphygmomanometer) is hidden in 'None of these.' If the correct answer is not among the labelled options, choose D. This has appeared in MPT 2022 twice in the same paper.
7. Anatomical Specifics — The Examiner's Favorite Traps
The Eye
- Cornea: Outer transparent layer. The ONLY part transplanted in eye donation (avascular — no blood vessels mean no immune rejection).
- Lens: Focuses light onto the Retina. Cataract affects the lens.
- Retina: The light-sensitive screen at the back. Contains Rods (dim light) and Cones (colour).
- Iris: Controls pupil size — regulates how much light enters.
The Ear
- Stapes (Stirrup): The smallest bone in the human body — located in the middle ear.
- Malleus (Hammer) and Incus (Anvil): The other two bones of the middle ear — collectively the ossicles.
- Eustachian Tube: Connects middle ear to the throat — equalizes pressure (why ears 'pop' on aircraft).
- Cochlea: Organ for hearing in the inner ear.
The Heart
- Auricle (Atrium): Upper chamber of the heart — receives blood.
- Ventricle: Lower chamber — pumps blood out.
- Right side pumps deoxygenated blood to the lungs; Left side pumps oxygenated blood to the body.
The Pancreas
- Islets of Langerhans: Specialized cells within the pancreas that produce Insulin (Beta cells) and Glucagon (Alpha cells).
- Insulin deficiency causes Diabetes Mellitus — a direct cause-and-effect the FPSC tests.
Size Trap. Smallest bone = Stapes (ear). Largest bone = Femur (thigh). Largest internal organ = Liver. Largest organ overall = Skin. These four form a common trap set in one question.
8. Process Flowchart — The Blood Lifecycle
Bone Marrow (Red Marrow) — Factory; produces all blood cells.
↓ circulate for 120 days ↓
Bloodstream — Carry oxygen via Hemoglobin; Pump: Heart.
↓ after 120 days ↓
Spleen — Graveyard; destroys and recycles old RBCs.
Diagram recommended: A circular lifecycle diagram showing Bone Marrow → Bloodstream → Spleen → Bone Marrow, with the Heart shown as a pump adjacent to the bloodstream stage.
9. CSSPrep Smart Laws
- Heart = Pump | Marrow = Factory | Spleen = Graveyard
- Tendon = Muscle → Bone | Ligament = Bone → Bone
- Right lung = 3 lobes; Left lung = 2 lobes — Left is smaller because it shares space with the Heart (Cardiac Notch).
- The cornea has no blood vessels → no immune rejection → transplant succeeds.
- Dendrites receive; Axon transmits — nerve signals travel in one direction only.
- Normal blood pH = 7.4 (slightly alkaline). Below 7.0 = acidic. Above 7.0 = alkaline.
10. Battle Card — 5-Minute Revision
| Fact | Answer |
|---|---|
| RBC Lifespan | 120 days |
| Blood Factory | Bone Marrow (Red Marrow) |
| Blood Graveyard | Spleen |
| Blood Plasma | Fluid portion of blood — liquid component |
| Rarest Blood Group | AB Negative |
| Blood Pressure Instrument | Sphygmomanometer |
| Oxygen Level Instrument | Pulse Oximeter |
| Tendon | Connects Muscle to Bone (T-MB) |
| Ligament | Connects Bone to Bone (L-BB) |
| Largest Bone | Femur (Thigh Bone) |
| Smallest Bone | Stapes (Middle Ear) |
| Eye Donation Part | Cornea (avascular — no immune rejection) |
| Insulin Source | Islets of Langerhans — Pancreas |
| Right Lung Lobes | 3 lobes (Left = 2 lobes — Cardiac Notch) |
| Normal Body Temp | 37°C / 98.6°F |
| Normal Blood pH | 7.4 (slightly alkaline) |
| Cytology | Study of cell structure and function |
| Vitamin K deficiency | Excessive bleeding / impaired clotting |
| Haemoglobin deficiency | Anaemia — impaired oxygen transport |
11. Practice MCQs (FPSC Level)
Part A — Basic Recall (Q1–Q5)
Direct recall questions on confirmed past-paper facts.
The lifespan of a Red Blood Cell in the human body is approximately:
Show explanation
RBC lifespan is 120 days. After this, the fragile cell membrane leads to destruction in the Spleen.
Trap: 60, 90, and 180 are all classic FPSC distractors — memorize 120 as a fixed number.
MPT 2022
Red Blood Cells (RBCs) are primarily produced in the:
Show explanation
Bone Marrow (red marrow in flat bones — sternum, ribs, pelvis) produces all blood cells.
Trap: The Heart only pumps — it never produces blood cells. This is the most frequently tested trap in this chapter.
MPT 2024
The fluid portion of blood is known as:
Show explanation
Plasma is the yellowish liquid matrix of blood, constituting approximately 55% of total blood volume.
Trap: Serum is plasma with clotting factors removed — a common distractor. Lymph belongs to the lymphatic system, not blood.
MPT 2023
Excessive bleeding during an injury is most directly caused by a deficiency of:
Show explanation
Vitamin K is essential for synthesizing clotting factors in the liver. Its deficiency causes prolonged or excessive bleeding.
Trap: Vitamin C deficiency causes Scurvy (bleeding gums) — a different condition frequently used as a distractor.
MPT 2024
Which of the following is correctly matched regarding blood?
Show explanation
Plasma is the fluid portion of blood — correct.
Trap: A is wrong (RBC lifespan = 120 days, not 90). B is wrong (blood is produced in Bone Marrow, not Spleen). D is wrong (the Heart pumps blood — it does not produce WBCs).
Part B — Trap-Based (Q6–Q12)
FPSC traps drawn from confirmed past-paper distractor patterns.
The instrument used to measure blood pressure is called a:
Show explanation
The correct instrument is a Sphygmomanometer, but it does not appear in the options. Since the correct answer is absent, choose D — None of these. Appeared twice in the same 2022 paper.
Trap: Barometer measures atmospheric pressure. Hydrometer measures liquid density. Nanometer is a unit of length, not an instrument.
MPT 2022 (Repeated)
The instrument used to measure the oxygen level in blood is the:
Show explanation
A Pulse Oximeter measures oxygen saturation (SpO₂) in blood. It is consistently absent from FPSC option lists.
Trap: Spirometer = lung capacity and airflow. Thermometer = body temperature. Barometer = atmospheric pressure. The answer is always D — None of these.
Which blood group is the rarest in the human body?
Show explanation
AB Negative is the rarest blood group. In confirmed FPSC papers, this option has never appeared explicitly — only A, B, and O are listed. Since the correct answer is absent, choose D.
Trap: If a future paper lists AB Negative as an explicit option, choose it directly. Always read the options first — never assume the format.
MPT 2022
Which structure connects one bone to another bone?
Show explanation
Ligament connects Bone to Bone (memory hook: L-BB). Tendon connects Muscle to Bone (memory hook: T-MB).
Trap: Cartilage cushions joints — it is not a connector tissue. Muscle is an organ, not a connective tissue. FPSC consistently offers Tendon as the trap for bone-to-bone questions.
The right lung has how many lobes?
Show explanation
The right lung has 3 lobes (Upper, Middle, Lower). The left lung has only 2 lobes because the Cardiac Notch — an indentation that accommodates the heart — occupies the space where the middle lobe would be.
Trap: This distinction appears in almost every MPT paper.
MPT 2023
During an eye donation, the specific part of the eye that is transplanted is the:
Show explanation
The Cornea is the only part transplanted in eye donation. It is avascular (no blood vessels), so the immune system cannot reach it via blood to mount a rejection response.
Trap: Lens/Retina/Iris are all vascularised or innervated — they cannot be transplanted simply.
The normal human body temperature in degrees Fahrenheit is:
Show explanation
Normal body temperature = 37°C = 98.6°F.
Trap: Option D (37.0°F) is a deliberate trap — the Celsius value printed with a Fahrenheit symbol. 37°F ≈ 2.8°C, which is near-freezing temperature — clearly not a living body temperature. Eliminate D first, then confirm B.
Part C — Elite Simulation (Q13–Q16)
Multi-statement and cause-and-effect logic at full FPSC difficulty.
Which of the following about Red Blood Cells is CORRECT?
Show explanation
RBCs contain Haemoglobin (binds and transports oxygen) and are produced in Bone Marrow.
Trap: A is wrong — the Spleen destroys old RBCs, it does not produce them. C is wrong — mature RBCs have NO nucleus (ejected during maturation to maximize haemoglobin space). D is wrong — lifespan is 120 days, not 90.
Consider: (1) Ligament connects bone to bone. (2) Tendon connects muscle to bone. (3) Cartilage acts as a shock absorber in joints. Which are correct?
Show explanation
All three statements are correct: (1) Ligament = Bone to Bone, (2) Tendon = Muscle to Bone, (3) Cartilage = shock absorber in joints.
Trap: The FPSC trap is psychological — the question format implies one statement must be wrong. When all are individually verified as correct, choose D confidently.
A deficiency of hemoglobin in blood would most directly impair:
Show explanation
Haemoglobin is the oxygen-carrying protein in RBCs. Its deficiency (Anaemia) directly reduces the blood's oxygen-carrying capacity, impairing oxygen delivery to all body tissues.
Trap: Cause-and-effect logic — the answer follows directly from knowing haemoglobin's sole function.
The process by which developing RBCs eject their nucleus during maturation is called:
Show explanation
Enucleation occurs at the reticulocyte/late erythroblast stage in bone marrow. By the time the cell is truly mature, it has already lost its nucleus.
Trap: Distinguishes Enucleation (nucleus ejection in RBCs) from Apoptosis (programmed cell death).
12. Answer Key & Explanations
Human Anatomy & Physiology — Q1–Q16
| Q | Correct | Type | Primary Trap | Why Others Fail |
|---|