Answer the following statements true (T) or false (F)
1. Systemic circulation begins in the left ventricle or aorta and ends in the vena cava or right atrium.
2. Pulmonary circulation begins in the pulmonary artery or right ventricle and ends in the pulmonary vein or right atrium.
3. The hepatic portal vein connects the blood leaving the liver to the inferior vena cava.
4. The hepatic portal system sends blood through two sets of capillary beds rather than the usual one set of capillaries.
5. One function of the hepatic portal system is to help maintain glucose homeostasis in the blood.
1. TRUE
2. FALSE
3. FALSE
4. TRUE
5. TRUE
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This fontanel usually closes within 18 to 24 months after birth
a) A b) B c) C d) D e) Both A and C
Amino acids and glucose are both absorbed by secondary active transport by the small intestinal epithelial cells
Indicate whether the statement is true or false
Blood Ca2+ deficiency stimulates ________ secretion, which leads to ________.
A. growth hormone; increased osteoblast activity B. calcitriol; more urinary phosphate excretion C. thyroid hormone; less urinary calcium excretion D. calcitonin; more urinary phosphate reabsorption E. parathyroid hormone; increased osteoclast activity
Which of the following is TRUE regarding pituitary growth hormone (GH)?
A. The liver produces a factor that mediates the metabolic actions of GH. B. GH stimulates insulin-like growth factor-1 (IGF-1) production by the liver and by many other cells. C. GH increases the sensitivity of tissues to the action of insulin. D. GH exerts negative feedback on its own production by inhibiting the hypothalamic secretion of somatostatin. E. IGF-1 stimulates the secretion of GH by anterior pituitary gland cells.