Match each of the terms with its definition or explanation.
-Point of contact between the nerve ending and the muscle fiber
A)Skeletal muscle
B)Smooth muscle
C)Origin
D)Insertion
E)Actin
F)Myosin
G)Motor unit
H)Neuromuscular junction
I)Isotonic
J)Isometric

Question

Quizplus · Accepted Answer

Neuromuscular junction is the point of contact between the nerve ending and the muscle fiber.

Answer: A 
 Skeletal muscle refers to the muscles attached to bones that produce movement.

Answer: D 
 Insertion refers to the attachment site of the muscle to the bone that moves.

Answer: F 
 Myosin is a type of protein found in muscle fibers that is responsible for muscle contraction.

Answer: E 
 Actin is a type of protein found in muscle fibers that, along with myosin, is responsible for muscle contraction.

Answer: G 
 Motor unit refers to a motor nerve and all the muscle fibers it controls.

Answer: C 
 Origin refers to the site of muscle attachment to the bone that remains stationary during movement.

Answer: I 
 Isotonic refers to a type of muscle contraction where the muscle changes length, such as during lifting a weight.

Answer: J 
 Isometric refers to a type of muscle contraction where the muscle does not change length, such as during holding an object in place.

Match Each of the Terms with Its Definition or Explanation