Microtubules are composed primarily of:

a. phospholipids
b. actin
c. myosin
d. tubulin
e. enzymes


D

Anatomy & Physiology

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The substance that prevents collapse of the alveoli during exhalation is __________.

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

Anatomy & Physiology

Because of different origin and insertion sites, the flexor carpi radialis muscle flexes and abducts the wrist, while the flexor carpi ulnaris flexes and ________ the same joint.

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

Anatomy & Physiology

Most information received by neurons enters at.

A) dendrites. B) axons. C) collaterals. D) hillocks. E) the cell body.

Anatomy & Physiology

The affinity of hemoglobin for oxygen increases with:

A) increased hydrogen ion concentration. B) increased body temperature. C) increased BPG (2, 3-bisphosphoglycerate). D) increased partial pressure of carbon dioxide.

Anatomy & Physiology