Which extraembryonic membrane appears first?

A) chorion
B) yolk sac
C) allantois
D) amnion


B
Explanation:
A) The chorion does not develop first.
C) The allantois does not develop first.
D) The amnion does not develop first.

Anatomy & Physiology

You might also like to view...

Which of the following fibers of the ANS are adrenergic?

A. Sympathetic preganglionic fibers B. Sympathetic postganglionic fibers C. Somatic preganglionic fibers D. Parasympathetic preganglionic fibers E. Parasympathetic postganglionic fibers

Anatomy & Physiology

The __________ is the area of the cloaca into which the uterus and vagina open

Fill in the blank(s) with correct word

Anatomy & Physiology

Terms of anatomical direction are used to describe

A) one body part in relation to another. B) surgical procedures. C) a supine position. D) the nervous system. E) living matter.

Anatomy & Physiology

The role of the glomerulus is to

A) Provide blood to the nephron. B) Accept blood from the Bowman's capsule. C) Concentrate the urine. D) Establish osmotic gradients in the kidney medulla.

Anatomy & Physiology