Which of the following is considered to be the "functional unit" of skeletal muscle fibers?
A. The myofilaments
B. The neuromuscular junction
C. The sarcoplasmic reticulum
D. The sarcomere
E. The Z disc
Answer: D
Anatomy & Physiology
You might also like to view...
Muscles may be named using ________
A) Action B) Age C) Speed D) Myofilament type
Anatomy & Physiology
The cilia of the hair cells of the semicircular canals are embedded in the
A) saccule. B) cupula. C) utricle. D) cristae. E) ampullae.
Anatomy & Physiology
Macromolecules are built of atoms
Indicate whether the statement is true or false
Anatomy & Physiology
Proteins are critical to metabolism because all proteins are enzymes
Indicate whether the statement is true or false
Anatomy & Physiology