The process of keratinization involves
a) synthesizing new pigment in the skin.
b) cells accumulating a tough fibrous protein that helps protect the skin.
c) changes occurring in thin skin only.
d) both synthesizing new pigment in the skin and cells accumulating a tough fibrous protein that helps protect the skin.
e) none of these answer choices are correct.
Answer: b
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Match the following terms to the correct answer:
1. an AV valve that has three flaps 2. a semilunar valve that has the right ventricle on one side 3. also called the mitral valve 4. has three cuplike leaflets and has the aorta on one side A. tricuspid valve B. bicuspid valve C. aortic valve D. pulmonary valve
Of the following muscles of the thigh, which one has its origin on the ischial tuberosity and inserts on the medial condyle of the tibia?
A) semitendinosus B) gracilis C) semimembranosus D) biceps femoris
The skeletal muscle pump changes venous return by ____________________ it
Fill in the blank(s) with correct word
Which of the following nerves arising from the lumbosacral plexuses are the largest and longest peripheral nerves in the body?
A) femoral nerves B) obturator nerves C) pudendal nerves D) sciatic nerves