Hormones (Ch. 45 & 41)In a positive-feedback system where hormone A alters the amount of protein X. Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along havve distant cells outside the gonads. Thus, testosterone is an example of. Which category of signal exerts its effects on target cells by binding to membrane-bound receptor proteins? A paracrine signal that relaxes smooth muscle cells is.
Hormones (Ch. 45 & 41) Flashcards | Quizlet
In a positive-feedback system where hormone A alters the amount of protein X. Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of. Which category of signal exerts its effects on target cells by binding to membrane-bound receptor proteins?
A paracrine signal that relaxes smooth muscle cells is. Prostaglandins are local regulators whose chemical structure is derived from. Ecdysone is a n.
Aspirin and ibuprofen both. A cell with membrane-bound proteins that selectively bind a specific hormone is called that hormone's. The reason that the steroid hormone aldosterone affects only a small number of cells in the body is that. Different body cells can respond differently to the same peptide hormones because.
Insect hormones and their receptors. Endocrine glands that are sources of steroid hormones. A chemical signal operating in a paracrine manner is one that.
Hormone X activates the cAMP second messenger system in its target cells. The greatest response by a cell would come from. When a steroid hormone and a peptide hormone exert similar effects on a population of target cells, then. For hormones that homeostatically regulate cellular functions,.
Nitric oxide and epinephrine. Suppose that substance X is secreted by one cell, travels via interstitial fluid to a neighboring cell, and produces an effect on that cell.
All of the following terms could describe this substance except. Hormones that promote homeostasis. During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of. During short-term starvation, most available fuel molecules are catabolized to provide energy for metabolism rather than being used as building blocks for growth and repair, a trade-off that is hormonally regulated by. Based on their effects, which pair below would not be expected to be active at the same time and place?
The interrelationships between the endocrine and the nervous systems are especially apparent in. The hypothalamus modulates hormone secretion by the anterior pituitary by means of. Portal blood vessels connect two capillary beds found in the. 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. 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. A product of the anterior pituitary gland that causes color changes in its target cells is. To prevent insect pests from maturing into reproducing adults, pest controllers use synthetic agonists of. In a lactating mammal, the two hormones that promote milk synthesis and milk release, respectively, are. Oxytocin and antidiuretic hormone are synthesized in the.
Endocrine structures derived from nervous tissue include the. Iodine is added to table salt to help prevent deficiencies of an essential mineral needed for the proper function of the. A tropic hormone from the anterior pituitary gland regulates the secretion of. Which endocrine disorder is correctly matched with the malfunctioning gland? One reason a person might be severely overweight is due to. Fight-or-flight reactions include activation of. The endocrine glands include the. The body's reaction to PTH parathyroid hormone , a reduction in plasma levels of calcium, can be opposed by.
Which of the following has both endocrine and exocrine activity? Linkage to membrane-bound receptor proteins on target cells activates the typical actions of the.
Analysis of a blood sample from a fasting individual who had not eaten for 24 hours would be expected to reveal high levels of. When the beta cells of the pancreas release insulin into the blood,. A chemical signal that has both endocrine and neural roles is. The amino acid tyrosine is a starting substrate for the synthesis of.
The autonomic nervous system includes an endocrine gland known as the. A disease that destroys the adrenal cortex should lead to an increase in the plasma levels of. During a stressful interval. ACTH stimulates the adrenal cortex, and neurons of the sympathetic nervous system stimulate the adrenal medulla. In response to stress, the adrenal gland promotes the synthesis of glucose from noncarbohydrate substrates via the action of the steroid hormone.
Melatonin is secreted by. Winter hibernation and spring reproduction in bears are cued by seasonal changes in the secretion of. The steroid hormone that coordinates molting in arthropods is. After eating a carbohydrate-rich meal, the mammalian pancreas increases its secretion of. The higher level of metabolic activity typical of nonhibernating temperate mammals during the winter months is due to increased secretion of.
The increased contraction of the human uterus during labor and delivery is at least partially due to the actions of. Abnormally reduced somatic growth dwarfism can be a consequence of decreased hormone secretion from the.
DES is called an "endocrine disrupting chemical" because it structurally resembles, and interferes with, the endocrine secretions of the A pancreatic islet cells. Testosterone is an example of.
Estradiol is an example of. Epinephrine is an example of. In an experiment, rats' ovaries were removed immediately after impregnation and then the rats were divided into two groups.
Treatments and results are summarized in the table. The results most likely occurred because progesterone exerts an effect on the. A fantasy movie features a caterpillar that never matures into an adult, but simply gets larger and larger with each molt. It might be possible that the caterpillar did not mature into an adult because of. Which of the following is not an accurate statement? Hormones of the same chemical class usually have the same function. An example of antagonistic hormones controlling homeostasis is.
Growth factors are local regulators that. Which hormone is incorrectly paired with its action? Steroid and peptide hormones typically have in common. Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal?
Shortly after ingesting a big plate of carbohydrate-rich pasta, you measure your blood's hormone levels. What results would you expect, compared to before the meal? The relationship between the insect hormones ecdysteroid and PTTH is an example of.