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Endocrine System (lecture)

Terms in this set (10)

C. the thymus produces hormone (thymosin), but it belongs to the lymphatic system
Which of the following is not a "true" endocrine organ?
A. pineal body
B. pituitary gland
C. thymus
D. adrenal gland
E. parathyroid gland
D. the kidney produces an exocrine product (urine) and two hormones (renin and erythropoietin).
WHich one of the following is a mixed (endocrine/exocrine) organ?
A. placenta
B. hypothalamus
C. thymus
D. kidney
E. heart
D.
Which organ is matched with a hormone that it manufacture ?
A. adrenal gland-ACTH (adreocorticotropic hormone)
B. thyroid gland-thyrotropin
C. posterior lobe of pituitary gland-oxytocin
D. small intestine-secretion
E. stomach-gastric inhibitory polypeptide
B. A. is wrong because the hypothalamus produce more hormone thatn the pituitary gland. The problem with D is that ADH and oxytocin (produced by the hypothalamus) do not target the anterior pituitary gland.
Which statement is true regarding the pituitary gland?
A. It produces more hormones than any other structure in the body .
B. It manufactures seven hormone and releases nine into the bloodstream
C. It is suspended from the mesecephalon by a stalk of tissue termed the infundibulum.
D. It serves as a target for all of the hormones produced by the hypothalamus
E. if more than one of the above are true choos this response.
E. The thyroid gland is just inferior to the larynx.
Which statement is false regarding the thyroid gland ?
A. Its enlargement is called a goiter
B. it consists of two lobes connected by an isthmus
C. It produces T3, thryoxine and calcitonin
D. The parathyroid glands are embedded in it
E. It is positioned just above the larynx on the anterior aspect of the of the neck
F. All of them are correct
Parathryroid hormone elevates blood calcium leels by decreasing calcium loss in the urine, increasing the absorption of calcium from the small intestine, and by incresing the reabsorption of bone tissue by osteoclasts. Which one of the following is not a logical sequel to chronic hyperparathyroidism ?
A. increased release of calcitonin ( a hormone that decreases blood calcium levels)
B. weakened bone
C. loose teeth
D .hypercalcemia
E. hyperphosphaturia ( increased phosphate loss in urine)
F. If all are good choose F.
D. Hypersecretion of adrenal cortex hormones can cause it.
Which statement regarding the adrenal gland is false?
A. its cortex is divided into three named layers
B. it produces atecholamines and steroid hormones
C. its medulla releases epinephrine and norepiephrine
D. hyposecretion of adrenal cortex hormones produces a condition called cushings syndrome
E. each adrenal gland is positioned on the superior end of a kidney adjacent to the muscles of the back
E. Autocrine and paracrine regulators are biochemicals that do not fit the definition of hormones because they act within the same organ that produced them
Which statement regarding hormones is false?
A. most hormones are proteins or polypeptides
B. All hormones are carried to their targets by the bloodstream
C. hormones are secreted in minute quantities and are rapidly inactivated by being converted to other compounds
D. only the testis ovary and adrenal gland produce steroid hormones
E. autocrine and paracrine regulators are hormones
C. A and B both refer to the hypothalamohypohysial tract and E. is wrong because the portal system ends in the anterior lobe of the hypophysis (pituitary gland)
The hypothalamohypophysial portal system....
A. terminates in the posterior lobe of the pituitary gland
B. consists of axons of neurosecretory cells
C. carries a number of hypothalamic hormones to their target
D. is also known as the hypothalamohypophyisial tract
E. begins in the hypophysis and consists of blood vessels
C. The kidney produces erythropoietin and renin.
Which structure produces more than one hormone?
A. parathyroid gland
B. pineal gland
C. kidney
D. thymus
E. Testis
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