Match each term with its corresponding definition or description.
-Blood vessel that carries blood back to the heart
A)Ductus arteriosus
B)Artery
C)Ductus venosus
D)Vein
E)Tunica media
F)Capillary
G)Tunica externa
H)Hepatic portal vein
I)Tunica intima
J)Foramen ovale

Question

Quizplus · Accepted Answer

Veins carry blood back to the heart.

Answer: B 
 Arteries carry blood away from the heart.

Answer: H 
 The hepatic portal vein carries blood from the gastrointestinal tract to the liver.

Answer: F 
 Capillaries are the smallest blood vessels where exchange of nutrients and gases occurs.

Answer: E 
 The tunica media is the middle layer of blood vessel walls that contains smooth muscle and elastic tissue.

Answer: G 
 The tunica externa is the outermost layer of blood vessel walls that contains connective tissue.

Answer: I 
 The tunica intima is the innermost layer of blood vessel walls that is in contact with the blood.

Answer: A 
 The ductus arteriosus is a fetal blood vessel that connects the pulmonary artery to the aorta, allowing blood to bypass the lungs.

Answer: J 
 The foramen ovale is a fetal opening between the right and left atria of the heart that allows blood to bypass the lungs.

Answer: C 
 The ductus venosus is a fetal blood vessel that carries blood from the umbilical vein to the inferior vena cava.

Match Each Term with Its Corresponding Definition or Description