This figure shows a superior view of the developing embryo. What structure does number 1 indicate? 

A. Hypoblast
B. Primitive streak
C. Yolk sac
D. Epiblast
E. Notochord


Answer: B

Anatomy & Physiology

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Bilirubin enters the liver having originated in the spleen.

Answer the following statement true (T) or false (F)

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The muscle primarily responsible for producing the mouth posture shown in the following figure is:

A) orbicularis oris. B) risorius. C) zygomaticus major. D) buccinator. E) levator labii superioris.

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What part of the brain is in overall control of the ANS?

A. medulla oblongata B. hypothalamus C. thalamus D. cerebrum

Anatomy & Physiology

Fluid-filled sacs associated with synovial joints are ________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology