During skeletal muscle fiber contraction, the I bands and H zones narrow.
Answer the following statement true (T) or false (F)
True
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Which is not correct about spongy bone?
A. Its spaces hold red bone marrow. B. It forms diploe in the cranial bones. C. It is located in the epiphyses of long bones. D. It is located deep to compact bone. E. It is composed of tubular units called osteons.
The gross energy of food materials can be quantified experimentally using the technique known as __________
Fill in the blank with the correct word.
The hypophyseal portal system allows
A) regulating hormones to go directly from the hypothalamus to the anterior pituitary. B) blood from the brain to drain to the internal jugular vein. C) wastes from the brain to stimulate the pituitary. D) the blood—brain barrier to include the pituitary gland. E) All of the answers are correct.
The neurotransmitter acetylcholine is
A) always excitatory in the human body. B) not broken down in the synaptic cleft. C) actively transported back into synaptic terminals. D) None of the above.