Upon the nerve impulse arriving at the axon terminal,
A) active sites on actin are exposed.
B) active sites on myosin are exposed.
C) actin heads will bind to myosin.
D) muscle relaxation occurs.
E) acetylcholine is released.
E) acetylcholine is released.
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Which of the following is a function of the axial skeleton?
A) provides an attachment for muscles that move the appendicular skeleton B) provides an attachment for muscles that move the head, neck, and trunk C) provides an attachment for muscles involved in breathing D) provides protection for the brain and spinal cord E) All of the answers are correct.
What structure transports urine from the kidneys to the bladder?
A) urethra B) ureter C) liver D) bladder E) kidneys
Recall that the ability to maintain a stable internal environment in spite of changes in the external or internal environment is known as ____________ .
Fill in the blank(s) with the appropriate word (s).
Compare lymphatic capillaries in the small intestine with those found elsewhere
A) Lymphatic capillaries in the small intestine are called mucosa-associated lymphoid tissue and they contain dividing lymphocytes. Lymphatic capillaries elsewhere house mature, non-dividing, lymphocytes. B) Lymphatic capillaries in the small intestine are called lymph corpuscles and they are involved in the immune response of the body. Lymphatic capillaries elsewhere are not involved in the immune response of the body. C) Lymphatic capillaries in the small intestine are called lymph corpuscles and they are not involved in the immune response of the body. Lymphatic capillaries elsewhere are involved in the immune response of the body. D) Lymphatic capillaries in the small intestine also absorb nutrients to deliver to the hepatic portal vein and are critical components of the hepatic portal system. Lymphatic capillaries elsewhere do not carry any nutrients in the lymph. E) Lymphatic capillaries in the small intestine are called lacteals and they transport lipids. Lymphatic capillaries elsewhere are associated with blood capillary networks.