The _______________ cells, or cells of Leydig, produce the hormone _________
Fill in the blank(s) with correct word
interstitial, testosterone
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In the figure showing the veins of the lower extremity, which number indicates the great saphenous vein?
A. 1 B. 2 C. 3 D. 4 E. 5
Answer the following statements true (T) or false (F)
1. In order for the necessary bridges to form, potassium must be released from the endoplasmic reticulum. 2. In the sliding filament model of muscle contraction, bridges are formed between the myosin and actin. 3. Energy for muscle contraction is provided when ATP is broken down. 4. In order for movement to take place, when the prime mover contracts, the synergist must relax. 5. In order for movement to take place, the antagonists must do the opposite of the prime mover.
In addition to gas exchange the respiratory system plays a key role in
a. enhancing venous return. b. water and temperature balance. c. body defense. d. both (a) and (c) above. e. all of these answers.
The epithalamus is composed of the pituitary gland and habenular nucleus.
Answer the following statement true (T) or false (F)