The type of bone that is composed of small columns of bone loosely arranged in a grid-work pattern is known as ____ bone.
a. trabecular
b. spongy
c. soft
d. compact
Ans: b. spongy
You might also like to view...
It is best to allow all birds to perch on your hand for proper restraint
Indicate whether the statement is true or false
A weight-lifter strains to lift a heavy weight and there is no movement of the person's arms holding on to the weight. This type of contraction is called a/an ____ contraction.
A) treppe B) isometric C) concentric D) tetanus E) isotonic
Tubular reabsorption and tubular secretion differ in that
A. tubular secretion is a passive process; tubular reabsorption uses active transport. B. tubular reabsorption occurs in Bowman capsule; tubular secretion occurs in the peritubular capillary. C. tubular reabsorption increases urine volume; tubular secretion decreases urine volume. D. tubular secretion adds materials to the filtrate; tubular reabsorption removes materials from the filtrate. E. tubular secretion moves materials from the filtrate into the blood; tubular reabsorption moves materials from the blood into the filtrate.
Drugs called calcium channel blockers may be used to lower blood pressure by causing arteries to vasodilate. How do you suppose these drugs work?
A. They prevent calcium from entering cardiac muscle, thus slowing down the heart rate. B. They prevent calcium from entering the sarcoplasmic reticulum of smooth muscle. C. They stimulate the calcium pump in smooth muscle, thus removing calcium from the calmodulin. D. They prevent calcium from entering smooth muscle, thus allowing the muscle to relax. E. They prevent calcium from exiting the sarcoplasmic reticulum in skeletal muscle.