chapter 18 practice test Flashcards
Response patterns in the endocrine system are particularly effective in __________.
A)coordinating cell tissue and organ activities on a sustained long-term basis
B)crisis management
C)rapid short-term specific responses
D)the release of chemical neurotransmitters
A
Which of the following would NOT be characterized as an endocrine-controlled process?
A)puberty
B)pregnancy
C)maintenance of reproductive abilities in a female until menopause
D)the constriction of the iris muscles when a bright light is shined on the eye
D
The release of hormones by endocrine cells alters the __________.
A. very specific responses to environmental stimuli
B. rate at which chemical neurotransmitters are released
C. metabolic activities of many tissues and organs simultaneously
D. anatomical boundary between the nervous and endocrine systems
C
The biogenic amino hormones include __________.
A. E, NE, dopamine, melatonin, and thyroid hormones
B. oxytocin, ADH, GH, and prolactin
C. androgens, estrogens, corticosteroids, and calcitriol
D. leukotrienes, prostaglandins, and thromboxanes
A
Which of the following is NOT classified as an amino acid–derivative hormone?
A. epinephrine
B. melatonin
C. eicosanoids
D. thyroxine
C
A hormone that stimulates the opening of calcium channels and interaction with calmodulin __________.
A. will trigger the activation of cytoplasmic enzymes
B. will pass through the cell membrane owing to its lipid nature
C. will bind to the mitochondria inside a cell
D. is parathyroid hormone
A
Which of the following hormones is secreted in the pituitary gland and controls melanin production during fetal development, in young children, in pregnant women, and in some disease states?
A. melatonin
B. luteinizing hormone
C. melanocyte-stimulating hormone
D. oxytocin
C
Why is the hypothalamus a major coordinating and control center?
A. It produces all hormones secreted by the pituitary gland.
B. It initiates endocrine and neural reflexes.
C. It contains autonomic centers and acts as an endocrine organ.
D. It stimulates appropriate responses by peripheral target cells.
C
Often, when brains are removed from the body and examined in dissection, the pituitary gland is missing. This is likely because it is encased in which of the following bony structures?
A. sella turcica
B. maxillary sinus
C. frontal sinus
D. posterior cranial fossa
A
What is the slender, funnel-shaped structure that connects the pituitary gland to the hypothalamus?
A. pars tuberalis
B. infundibulum
C. sella turcica
D. sellar diaphragm
B
What is the hormone synthesized from molecules of the neurotransmitter serotonin in the pineal gland?
A.melanocyte-stimulating hormone
B. pinealtonin
C. oxytocin
D. melatonin
D
An abnormally low production of gonadotropin produces a condition called __________.
A. follitropism
B. hypogonadism
C. somatomedins
D. diabetogenesis
B
The thyroid gland curves across the anterior surface of the trachea just inferior to the __________.
A. thyroid cartilage
B. scapula and clavicles
C. sternum
D. dorsal ascending aorta
A
Which of the following is NOT an effect of thyroid hormones on peripheral tissues?
A. maturation of lymphocytes
B. stimulation of the formation of red blood cells
C. elevating levels of oxygen consumption and energy consumption
D. increasing heart rate and force of contraction
A
Hypothyroidism, myxedema, and goiter may result from an inadequate amount of __________.
A. magnesium and zinc
B. salt in the diet
C. sodium and calcium
D. dietary iodide
D
The two pairs of parathyroid glands are embedded in the __________.
A. anterior surfaces of the thyroid cartilage
B. lateral surfaces of the thyroid cartilage
C. anterior surfaces of the thyroid glands
D. posterior surfaces of the thyroid glands
D
What are the hormones released by the adrenal medulla?
A. mineralocorticoids and glucocorticoids
B. aldosterone and androgens
C. cortisol and corticosterone
D. epinephrine and norepinephrine
D
Endocrine secretions from which of the following adrenal regions would increase levels of sodium ions retained at the kidney?
A. zona reticularis
B. adrenal medulla
C. zona glomerulosa
D. zona fasciculata
C
Abnormal glucocorticoid production by the adrenal glands results in __________.
A. Addison disease and Cushing disease
B. seasonal affective disorder
C. adrenogenital and gynecomastia syndrome
D. hypo- and hyperaldosterism
A
Which of the following statements about the pineal gland is INCORRECT?
A. It produces melatonin.
B. It is found in the diencephalon of the brain.
C. It secretes androgens, along with the gonads.
D. It is important in maintaining the circadian rhythms, or day–night cycles, of an individual.
C
Which hormones are produced by the pancreatic islets that regulate blood glucose concentrations?
A. cortisol and androgens
B. leptin and resistin
C. insulin and glucagon
D. calcitonin and calcitriol
C
The pancreas lies in the J-shaped loop between the stomach and the small intestine in the __________.
A. pelvic cavity
B. thoracic cavity
C. cranial cavity
D. abdominopelvic cavity
D
Common diabetic-related medical problems include which of the following?
A. low blood pressure
B. muscular weakness
C. neurological disorders
D. partial or complete blindness
D
One of the major effects of ANP produced by the heart is that it __________.
A. constricts peripheral blood vessels
B. assists with the production of red blood cells
C. decreases thirst
D. promotes water retention at the kidneys
C