The ________ valve prevents backflow of blood from the aorta into the ________ ventricle.
A. pulmonary; right
B. aortic; leftÂ
C. pulmonary; left
D. aortic; right
Answer: B
Anatomy & Physiology
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The heart is an example of this level or organization.
a. tissue b. organ c. organ system d. organism
Anatomy & Physiology
Proteins are composed of chains of ________________________________________
Fill in the blank(s) with correct word
Anatomy & Physiology
Embryonic stem cells growing in a lab dish are bathed in a "cocktail" of chemicals that
cause them to specialize into branching networks of single-nucleated cells that pulsate in unison. This tissue is most likely A) skeletal muscle. B) cardiac muscle. C) epithelial tissue. D) smooth muscle.
Anatomy & Physiology
The bones that form the fingers are the
A) carpals. B) tarsals. C) metacarpals. D) metatarsals. E) phalanges.
Anatomy & Physiology