Blood enters the right atrium from the:

A) left and right pulmonary veins
B) left and right pulmonary arteries
C) superior and inferior vena cavae, and the coronary sinus
D) ascending aorta


Answer: C) superior and inferior vena cavae, and the coronary sinus

Anatomy & Physiology

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The skin is attached to the muscles of the body by the ________ layer.

A. epidermis B. dermis C. hypodermis D. subcutaneous

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A.  the first "gap" phase. B.  the second "gap" phase. C.  telophase. D.  the S phase. E.  anaphase.

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Which of the following muscles are antagonists?

A) biceps brachii and triceps brachii B) biceps femoris and biceps brachii C) vastus medialis and vastus lateralis D) masseter and temporalis E) gastrocnemius and soleus

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