Some researchers think pheromones are important tools in human communication. Pheromones are chemical signals that one individual sends to another
What research questions might be asked by anatomists, and what questions might be asked by physiologists, to determine if pheromones are important to humans?
Students might consider that anatomists would look for organs (and cellular machinery) to transmit pheromones and to receive them. Comparative anatomists might also look for structures in the brain that are homologous to pheromone processing areas in animals. Physiologists might study how pheromones are released, received, and processed. These studies could involve cellular and molecular approaches and would involve multiple organ systems (e.g., integumentary and nervous systems).
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The chemical curare is a nicotinic receptor antagonist. How will curare affect skeletal muscle function?
A. It activates an autoimmune disease that destroys myelin. B. It will cause spastic paralysis (sustained, unwanted muscle contraction). C. It will cause persistent twitches with short periods of rest in between. D. It will cause flaccid paralysis (no muscle contraction possible). E. Muscle function is fine, but it will cause a loss of voluntary control.
During phagocytosis, binding of a particle to a plasma membrane receptor triggers formation of _____, which are extensions of the plasma membrane of the phagocyte that eventually surround the particle forming a phagosome
a) podocytes b) exterior vesicles c) interior vesicles d) pseudopods e) lysosomes
The force that pushes fluid out of the capillaries is called
A) capillary hydrostatic pressure. B) osmotic pressure. C) systolic pressure. D) diastolic pressure. E) pressure gradient.
In general, a person of higher weight consumes more energy (kcal/min) than a person of lower weight, when performing the same type of exercise at the same rate.
Answer the following statement true (T) or false (F)