How would the absolute refractory period be affected if voltage-regulated sodium channels failed to inactivate?
A) It would last indefinitely.
B) It would be much briefer.
C) It would be basically unaffected.
A
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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.
Patient X has a tumor of the parathyroid glands that causes a hypersecretion of PTH from these glands. Predict the effect this hypersecretion would have on the skeletal system and on the secretion of calcitonin from the thyroid gland
What will be an ideal response
What is mastication?
A. Chewing and mixing food with saliva B. Swallowing C. Rhythmic alternate contraction of muscle layers D. Secretion of mucus E. Taking food into the mouth
________ are cells in the epidermis that are part of the immune system
A) Dendritic cells B) Basal cells C) Merkel cells D) Squamous cells E) Melanocytes