All of the following are functions of membrane receptors EXCEPT __________.
A)chemical signaling
B)contact signaling
C)G-protein linking
D)cell adhesion
D)cell adhesion
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Which of the following is NOT a common characteristic of an exocrine gland?
a) Initially secretes its products into a duct. b) Secretes materials onto outer surface of the body. c) Secretes materials into the lumen of hollow organs. d) Its secretory products are carried in body fluids to distant target cells. e) All the answer selections describe characteristics of exocrine glands.
Which of the following resulted in an increase in glomerular filtration rate?
A) increasing the efferent arteriole diameter and increasing the afferent arteriole diameter B) increasing the efferent arteriole diameter C) decreasing the efferent arteriole diameter and increasing the afferent arteriole diameter D) increasing the afferent arteriole diameter E) decreasing the efferent arteriole diameter
Describe autoregulation at the kidneys
A) Autoregulation is the process of maintaining GFR despite changes in local blood pressure and blood flow by releasing hormones that influence salt and water reabsorption in the kidney. B) Autoregulation is the process of maintaining GFR despite changes in local blood pressure and blood flow by activating the sympathetic nervous system. C) Autoregulation is the process of maintaining GFR despite changes in local blood pressure and blood flow by changing local responses in the kidney. D) Autoregulation is the process of maintaining GFR despite changes in local blood pressure and blood flow by activating the central nervous system. E) Autoregulation is the process of maintaining GFR despite changes in local blood pressure and blood flow by changing respiratory rate.
Answer the following statements true (T) or false (F)
1. Glucocorticoids are steroid hormones that usually enhance the immune responses when an individual is suffering from severe stress. 2. Direct gene activation involves a second-messenger system. 3. All peptide hormone synthesis requires gene activation that produces mRNA. 4. All adenohypophyseal hormones except GH affect their target cells via a cyclic AMP second messenger. 5. The primary source of RBCs in the adult human being is the bone marrow in the shafts of the long bones.