In von Willebrand disease, which is either autosomal recessive or autosomal dominant,
clotting time slows and the person bruises and bleeds easily. Not everyone who inherits
the disease genotype actually develops the phenotype.
Affected individuals have
differing degrees of difficulty in clotting of blood. This condition is
A) incompletely penetrant, variably expressive, and genetically heterogeneic.
B) completely penetrant, invariably expressive, and not genetically heterogeneic.
C) pleiotropic and genetically heterogeneic
D) completely penetrant, variably expressive, and not genetically heterogeneic.
A
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Blood flows to the brain through the _____ arteries and away from the brain through the _____ vein
a) internal carotid and vertebral; internal jugular b) external carotid and vertebral; external jugular c) internal jugular and vertebral; internal carotid d) internal carotid and axillary; internal jugular e) external jugular and axillary; external jugular
Under the influence of progesterone, estrogen exerts negative feedback on the ________, decreasing GnRH, LH, and FSH secretion.
A. hypothalamus and pituitary B. pons and thalamus C. adrenal cortex and medulla D. thyroid and parathyroid
Select the pathway along which images received by the retina of the eye will travel into the brain
A) optic nerve, optic chiasma, optic tracts, thalamus, optic radiation, occipital lobe B) cochlear nerve, optic disc, optic tracts, thalamus, temporal lobe C) optic tracts, optic chiasma, optic nerve, thalamus, optic radiation, occipital lobe D) optic nerve, optic radiation, optic tracts, hypothalamus, temporal lobe E) vestibular nerve, optic disc, optic chiasma, optic tracts, thalamus, parietal lobe
The following is a list of tissue layers of the digestive tract. What is the correct order from lumen to external surface?
(1) Muscularis externa (2) Muscularis mucosa (3) Serosa (4) Lamina propria (5) Submucosa A. 4, 2, 5, 1, 3 B. 3, 4, 5, 2, 1 C. 2, 5, 4, 1, 3 D. 4, 5, 2, 1, 3 E. 4, 2, 1, 5, 3