Fight-or-flight reactions include activation of
A) the thyroid gland, leading to an increase in the blood calcium concentration.
B) the anterior pituitary gland, leading to cessation of gonadal function.
C) the pancreas, leading to a reduction in the blood sugar concentration.
D) the adrenal medulla, leading to increased secretion of epinephrine.
E) the parathyroid glands, leading to increased metabolic rate.
Answer: B
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AP Biology Chapter 32
- Positive feedback differs from negative feedback in that
- Which process in the nephron is least selective?
- Connective tissues typically have
- Antidiuretic hormone (ADH) functions at the cellular level by
- Low selectivity of solute movement is a characteristic of
- A primary reason that the kidneys have one of the highest metabolic rates of all body organs is that
- The reason that the steroid hormone aldosterone affects only a small number of cells in the body is that
- Prolactin stimulates mammary gland growth and development in mammals and regulates salt and water balance in freshwater fish. Many scientists think that this wide range of functions indicates that prolactin
- Ammonia
- Interstitial fluid is
- Examine Figure 32.1. Near a goose's abdomen, the countercurrent arrangement of the arterial and venous blood vessels causes
- Unlike most bony fishes, sharks maintain body fluids that are isoosmotic to seawater, so they are considered by many to be osmoconformers. Nonetheless, these sharks osmoregulate at least partially by
- If a person loses a large amount of water in a short period of time, he or she may die from dehydration. ADH can help reduce water loss through its interaction with its target cells in the
- During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of
- Compared to wetland mammals, water conservation in mammals of arid regions is enhanced by having more
- A human who has no access to fresh water but is forced to drink seawater instead
- The thin horizontal arrows in Figure 32.1 show that
- Excretory structures known as protonephridia are present in
- The nitrogenous waste that requires the most energy to produce is
- The nourishment, insulation, and support for neurons is the result of activity by the
- Blood is best classified as connective tissue because
- For hormones that homeostatically regulate cellular functions,
- Urea is produced in the
- Increased ADH secretion is likely after