Although his cholesterol levels were not high, Mr. Martinez read that cholesterol was bad for his health, so he eliminated all foods and food products containing this molecule. He later found that his cholesterol level dropped only 20%. Why did it not drop more?
What will be an ideal response?
Cholesterol is produced by the liver, in addition to being ingested in foods.
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Hemocytoblast stem cells
A. are specialized cells. B. are found in yellow bone marrow. C. form branches of trees. D. are abundant in the plasma. E. give rise to all formed elements in the blood.
Body cells communicate with immune system cells through direct contact involving the sugary coatings on the cells' surfaces
Indicate whether this statement is true or false.
Define stretch reflex
A) A stretch reflex is an example of a withdrawal reflex that contracts the flexor muscles of a limb in response to a painful stimulus. B) A stretch reflex is a polysynaptic reflex that activates extensor muscles in the opposite leg or arm when a flexor reflex is activated. C) A stretch reflex is a monosynaptic reflex that activates extensor muscles in the opposite leg or arm when a flexor reflex is activated. D) A stretch reflex is a monosynaptic reflex that provides regulation of skeletal muscle length. E) A stretch reflex is a polysynaptic reflex that provides regulation of skeletal muscle length.
Which accurately describes the median eminence of the hypothalamus?
A. It is a site where neurohormones are released into blood vessels. B. It is the site of synthesis of adrenocorticotropic hormone (ACTH). C. It is the stalk connecting the hypothalamus to the posterior pituitary. D. It is the main site where thyroid-stimulating hormone first enters the bloodstream. E. It is the site where vasopressin is released into blood vessels.