Rigor mortis occurs when Ca2+ links actin and the myosin globular head together in a rigor complex.
Indicate whether the statement is true or false
(
Question 2) Lipids
a. are broken down by pepsin.
b. are absorbed into lacteals.
c. enter as micelles.
d. both (a) and (b) above.
e. both (b) and (c) above.
(
Question 3) The smaller the load, the lower the velocity at which the muscle fiber shortens during an isotonic tetanic contraction.
Indicate whether the statement is true or false
(
Question 4) The intestinal feature responsible for increasing the absorptive surface area the most are
a. circular folds.
b. villi.
c. microvilli.
d. crypts.
e. none of these answers.
(
Question 5) The term excitationcontraction coupling refers to the series of events linking signals from the brain to the spinal cord.
Indicate whether the statement is true or false
(
Question 6) Of the fluid entering the small intestine, ____ is reabsorbed.
a. 100
b. 95
c. 85
d. 50
e. < 50
(
Question 7) In general, the contraction of skeletal muscle lasts longer than contraction of smooth muscle.
Indicate whether the statement is true or false
(
Question 8) Chylomicrons are
a. aggregations of triglycerides formed within intestinal epithelial cells and covered with a layer of lipoprotein, which renders them water-soluble.
b. aggregations of bile salts, monoglycerides, and free fatty acids.
c. small fat globules held apart by the action of bile salts.
d. secreted in the succus entericus.
e. digested by bacteria in the colon.
(
Question 9) Acetylcholinesterase removes ACh from receptors.
Indicate whether the statement is true or false
(
Question 10) Which is not a brush border enzyme?
a. enterokinase.
b. aminopeptidase.
c. lipase.
d. lactase.
e. maltase.
Quick Reply
