51) Compared to most other organs in the body, endocrine organs are
A) well vascularized.
B) poorly vascularized.
C) have an average amount of vascularization.
D) mainly epithelial cells.
52) The condition in which a neoplasm leads to hypersecretion of amine hormones by the adrenal medulla is called
A) Graves' disease.
B) pheochromocytoma.
C) myxedema.
D) acromegaly.
53) The secretion of hormones by the anterior lobe of the pituitary is controlled by the
A) pars distalis.
B) pancreatic islets.
C) hypothalamus.
D) atria of the heart.
54) Individuals with type 2 diabetes
A) have an absolute requirement for insulin injections.
B) have normal concentrations of glucose in their blood.
C) may often control their disease by diet and exercise.
D) have pancreases that produce and secrete very little insulin.
55) The major stimulus for the release of thyroid hormone is
A) hormonal.
B) humoral.
C) nervous.
D) calcium.
56) The major stimulus for the release of the amine hormones of the adrenal gland is
A) hormonal.
B) humoral.
C) nervous.
D) adrenaline.
57) Which of the following hormones is secreted by neurons?
A) oxytocin
B) thyroid hormone
C) growth hormone
D) insulin
58) Which of the following hormones is secreted by cardiac muscle cells?
A) ADH
B) FSH
C) atrial natriuretic hormone
D) epinephrine
59) Which of the following hormones is secreted into the primary capillary plexus of the hypophyseal portal system?
A) growth hormone-releasing hormone
B) growth hormone
C) ADH
D) oxytocin
60) The hypophyseal portal veins are primarily located in the
A) pars nervosa.
B) infundibulum.
C) tuber cinereum.
D) pars intermedia.