The blood pigment ________ imparts a pinkish hue to the skin.
Fill in the blank(s) with the appropriate word(s).
hemoglobin
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Sebaceous glands discharge an oily, waxy secretion called _______
Fill in the blank with correct word.
GI tract hormones can affect the same organs that secrete them.
Answer the following statement true (T) or false (F)
This figure shows the right anterior forearm. What muscle does number 1 indicate?
A. Brachialis B. Palmaris longus C. Pronator teres D. Brachioradialis E. Flexor carpi radialis
When elephants get hot, they flap their ears. This works nicely as a mechanism for heat loss because
a. the large surface to volume ratio of the ear favors loss of heat to the environment. b. the flapping favors heat loss by conduction. c. the flapping favors heat loss by convection. d. the flapping favors heat loss by evaporation. e. all of these.