Question

question 19
1 pts
the ____ is(are) supplied with blood from the left subclavian artery.
o spinal cord and brain
o fingers
o head and upper extremities
o lower torso
question 20
1 pts
renal veins drain blood from the
____
o eyes.
o hands.
o pelvic region.
o kidneys.
question 21
1 pts
the ____ drains much of the superficial leg and foot.
o inferior vena cava
o popliteal vein
o great saphenous vein
o internal iliac vein

Explanation:

• Question 19: The left subclavian artery supplies blood to the head and upper extremities. The spinal cord and brain are mainly supplied by the vertebral arteries (which can branch from the subclavian artery in some cases, but the more general and direct answer for the subclavian artery's main supply to a large region is head and upper extremities). Fingers are a part of the upper extremities but a more specific (and less comprehensive) option. The lower torso is supplied by different arteries like the abdominal aorta branches.
• Question 20: Renal veins specifically drain blood from the kidneys. The eyes have their own vascular drainage (ophthalmic veins etc.), hands have venous drainage like the cephalic and basilic veins (and their tributaries), and the pelvic region has its own venous plexuses and veins like the internal iliac veins.
• Question 21: The great saphenous vein drains much of the superficial leg and foot. The inferior vena cava is a large vein that receives blood from multiple sources (including the common iliac veins which in turn receive from pelvic and lower limb veins, but it's not specific to superficial leg and foot). The popliteal vein is more related to the deep venous system around the knee. The internal iliac vein is related to pelvic venous drainage.

Answer:

• Question 19: head and upper extremities
• Question 20: kidneys
• Question 21: great saphenous vein