BIOL252: Human Anatomy & Physiology II w/Lab Module 3 – Cardiovascular System: Blood Vessels

ESTUDYR




BIOL252: Human Anatomy & Physiology II w/Lab

Module 3 – Cardiovascular System: Blood
Vessels

Question 1

The first Korotkoff sound heard during blood pressure measurement corresponds to which value?

 A. Diastolic pressure
 B. Systolic pressure
 C. Mean arterial pressure
 D. Pulse pressure

Rationale: The first Korotkoff sound occurs when cuff pressure falls just below systolic
pressure, allowing turbulent flow.

Question 2

Which vessel directly receives blood from the left ventricle?

 A. Ascending aorta
 B. Pulmonary trunk
 C. Brachiocephalic trunk
 D. Coronary sinus

Rationale: The left ventricle ejects oxygenated blood into the ascending aorta.

Question 3

Which artery supplies the anterior cerebral hemispheres?

 A. Internal carotid artery
 B. Middle cerebral artery
 C. Anterior cerebral artery
 D. Posterior cerebral artery

Rationale: The anterior cerebral artery supplies medial portions of the frontal and parietal lobes.

,ESTUDYR


Question 4

All of the following vessels bring blood to the foot EXCEPT:

 A. Femoral artery
 B. Popliteal artery
 C. Posterior tibial artery
 D. Brachial artery

Rationale: The brachial artery supplies the upper limb, not the lower limb.

Question 5

Which layer of a blood vessel contains smooth muscle?

 A. Tunica intima
 B. Tunica media
 C. Tunica externa
 D. Endothelium

Rationale: The tunica media regulates vessel diameter via smooth muscle contraction.

Question 6

Which vessel carries deoxygenated blood from the right ventricle?

 A. Pulmonary trunk
 B. Pulmonary veins
 C. Aorta
 D. Superior vena cava

Rationale: The pulmonary trunk transports deoxygenated blood to the lungs.

Question 7

Which arteries branch directly from the aortic arch?

 A. Left common carotid, left subclavian, right subclavian
 B. Brachiocephalic trunk, left common carotid, left subclavian
 C. Coronary arteries
 D. Internal carotid arteries

Rationale: These three vessels arise directly from the aortic arch.

, ESTUDYR


Question 8

Which vessel drains blood from the brain?

 A. Internal jugular vein
 B. External carotid artery
 C. Vertebral artery
 D. Subclavian artery

Rationale: The internal jugular vein returns venous blood from the brain to the heart.

Question 9

Which artery becomes the femoral artery after passing under the inguinal ligament?

 A. External iliac artery
 B. Common iliac artery
 C. Internal iliac artery
 D. Popliteal artery

Rationale: The external iliac artery continues as the femoral artery.

Question 10

Which vessel has the thickest tunica media?

 A. Veins
 B. Capillaries
 C. Arteries
 D. Venules

Rationale: Arteries withstand higher pressure and require thicker smooth muscle layers.

Question 11

Capillary exchange primarily occurs by:

 A. Active transport
 B. Diffusion
 C. Pinocytosis only
 D. Osmosis only

Rationale: Most gases and nutrients move by diffusion across capillary walls.