Answer the following statements true (T) or false (F)
1. Without some sort of negative feedback mechanism, it would be impossible to keep our body chemistry in balance.
2. Regardless of the variable being regulated, all homeostatic control mechanisms have at least three interdependent components.
3. The epigastric region is located superior to the umbilical region.
4. Because the ANS is a visceral motor system, afferent pathways are of no importance and actually are rarely found.
5. The rami communicantes are associated only with the sympathetic division of the ANS.
1. TRUE
2. TRUE
3. TRUE
4. FALSE
5. TRUE
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All but one of the events described below occur during spermiogenesis. Select the event that does not occur during spermiogenesis
A) The centrioles migrate to the posterior end of the developing sperm to form the microtubules that make up the flagellum. B) Mitochondrial DNA is packaged into the nucleus to be delivered to the egg during fertilization. C) Excessive cytoplasm will be shed to reduce unneeded mass of the maturing sperm. D) Mitochondria form around the proximal end of the flagellum. They will provide the ATP to drive the motion of the flagellum.
Mean arterial pressure is:
a. diastolic pressure + (systolic/3) b. systolic pressure + (pulse pressure/3) c. diastolic pressure + (pulse pressure/3) d. pulse pressure - (diastolic pressure/3) e. pulse pressure + (systolic pressure/3)
Because of the presence of tight junctions, passage of materials across an epithelial barrier must take place between the cells, not through them
Indicate whether the statement is true or false
Muscle tendons help stabilize joints.
Answer the following statement true (T) or false (F)