The serosa is the
a. abdominal cavity containing the stomach
b. blood supply to the stomach
c. inner lining of the digestive tract
d. layer of smooth muscle of the digestive tract
e. outer connective-tissue covering of the digestive tract
E
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Indicate whether the statement is true or false
The _________ produces the hormone melatonin.
A) pituitary gland B) pineal gland C) thyroid gland D) pancreatic gland E) hypothalamus
What is the difference between the tunica externa in an artery compared to that in a vein?
a. The tunica externa is thinner in arteries than in veins. b. The tunica externa is thicker in arteries than in veins. c. Arteries do not have a tunica externa. d. Veins do not have a tunica externa.
After the infant is born, the umbilical vein becomes the ________.
A. fossa ovale B. round ligament C. ligamentum venosum D. ligamentum arteriosum