What is the pigment that protects the DNA of keratinocytes from mutations induced by UV radiation?
a. melanin
b. carotene
c. albinism
d. hemoglobin
Ans: a. melanin
Anatomy & Physiology
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What happens to the diaphragm when it contracts?
A. It becomes dome-shaped and aids in expiration. B. It becomes dome-shaped and aids in inspiration. C. It becomes flatter and aids in inspiration. D. It becomes flatter and aids in expiration.
Anatomy & Physiology
The shaft of a long bone is called the
A) epiphysis. B) trabecula. C) canaliculus. D) diaphysis. E) lamella.
Anatomy & Physiology
The semimembranosus inserts _____ on the ____ tibial condyle.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
The biceps femoris is located in the __________.
A. anterior arm B. anterior thigh C. posterior arm D. posterior thigh
Anatomy & Physiology