Answer the following statements true (T) or false (F)
1. Bursae are small fluid-filled sacs that lie between some tendons and bones.
2. The thin myofilament in a muscle fiber is made of actin.
3. The thick myofilament in a muscle fiber is made of actin.
4. The basic contractile unit of a muscle is called a sarcomere.
5. Z-lines mark the ends of individual sarcomeres.
1. TRUE
2. TRUE
3. FALSE
4. TRUE
5. TRUE
You might also like to view...
The ________ are the four masses on the posterior of the midbrain
A) cerebral peduncles B) reticular formation C) substantia nigra D) choroid plexuses E) corpora quadrigemina
Endorphins and enkephalins
a. are endogenous morphine-like substances. b. are important in the body's natural analgesic system. c. block the actions of substance P by binding with opiate receptors. d. both (a) and (b) above. e. all of these answers.
What are the sensory neurons in the PNS?
A. Somatic Sensory B. Visceral Sensory C. A and B D. none of the above
Regurgitation of blood flow through the aortic semilunar valve would give rise to
A. the first heart sound. B. the second heart sound. C. a heart murmur. D. an extra heart beat. E. end-systolic volume.