All Free General Anatomy MCQs with Answers

• A. Choroid plexus
• B. Cerebral veins
• C. Arachnoid villi
• D. Emissary veins

Explanation: Arachnoid villi or granulations project into dural venous sinuses and allow CSF to pass directly into the venous circulation.

• A. Lower border of LI
• B. Lower border of L3
• C. Lower border of S1
• D. Lower border of L5

Explanation: In adults, the spinal cord usually ends as the conus medullaris at the level of L1 to L2, commonly described near the lower border of L1.

• A. Occipital lobe
• B. Temporal lobe
• C. Frontal lobe
• D. Parietal lobe

Explanation: The primary visual cortex is located around the calcarine sulcus on the medial surface of the occipital lobe.

• A. 28
• B. 30
• C. 31
• D. 33

Explanation: There are 31 pairs of spinal nerves: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal pair. The total is therefore 31, not 33.

• A. I,II, VII, VIII
• B. I,II, VI, VII
• C. I,III,VII,VIII
• D. I,II,VI,VIII

Explanation: CSF can reach extracranial lymphatics along the sheaths of cranial nerves I, II, VII and VIII.

• A. Trochlear
• B. Occulomotor
• C. Vagus
• D. Abducent

Explanation: The trochlear nerve is the only cranial nerve to emerge from the dorsal surface of the brainstem, appearing below the inferior colliculus.

• A. Superior temporal gyrus
• B. Parietal lobe
• C. Inferior frontal lobe
• D. Angular gyrus

Explanation: Broca’s motor speech area lies in the dominant inferior frontal gyrus, usually involving the pars opercularis and pars triangularis.

• A. Basilar artery
• B. Vertebral artery
• C. Middle cerebral artery
• D. Anterior cerebral artery

Explanation: The basilar artery is an unpaired artery formed by the union of the two vertebral arteries on the ventral surface of the pons.

• A. Lower border of LI
• B. L2
• C. L3
• D. L4

Explanation: In adults, the spinal cord usually ends as the conus medullaris at the level of L1-L2, commonly near the lower border of L1.

• A. 50 ml
• B. 100 ml
• C. 150 ml
• D. 275 ml

Explanation: Total cerebrospinal fluid volume in an adult is approximately 150 mL, although it is continuously produced and reabsorbed.

• A. Touch
• B. Olfaction
• C. Hearing
• D. Pressure

Explanation: The thalamus relays nearly all major sensory modalities, including touch, pressure and hearing, but olfaction initially reaches the…

• A. Only a pair of pial extension
• B. A dural derivative
• C. Arachnoid extension only
• D. Extends to sacral segments only

Explanation: Denticulate ligaments are paired lateral extensions of pia mater that attach the spinal cord to the dura at intervals.

• A. Subclavian vein
• B. Internal jugular vein
• C. External jugular vein
• D. Thoracic vein
• E. Brachiocephalic

Explanation: The superior vena cava is formed by the union of the right and left brachiocephalic veins behind the lower border of the first right…

• A. Azygos
• B. Subclavian
• C. Internal jugular
• D. Brachiocephalic

Explanation: The internal thoracic veins ascend beside the internal thoracic artery and unite with the brachiocephalic veins near the first costal…

• A. Highly susceptible to ischaemia
• B. Mainly supplied by right coronary
• C. Mainly supplied by left coronary
• D. Has a dual blood supply?

Explanation: The atrioventricular bundle receives a dual supply through the AV nodal artery, usually from the right coronary artery, and branches from…

• A. T1 - T3
• B. T2 - T6
• C. T3 - T7
• D. L1 - L5

Explanation: Cardiac sympathetic fibres arise from upper thoracic spinal segments, commonly described as T1 to T4 or T1 to T5, with some sources…

• A. Right and left
• B. Anterior and posterior
• C. Medial & Lateral
• D. Apical and inferior

Explanation: The right middle lobe is divided by a medial cleft into medial and lateral segments.

• A. Left atrium
• B. Left ventricle
• C. Right ventricle
• D. Right atrium

Explanation: The left atrium lies immediately anterior to the oesophagus, separated from it mainly by the pericardium.

• A. T2
• B. T3
• C. T4
• D. T6

Explanation: The carina lies at the sternal angle, corresponding approximately to the T4–T5 intervertebral level in adults.

• A. Vertebra and vertebral discs
• B. Interspinous ligaments
• C. Paraspinal muscle
• D. All

Explanation: Vertebral stability depends on the combined support of the vertebrae and discs, spinal ligaments such as the interspinous ligaments, and…