Match each of the terms with its definition or explanation.
-Attachment point to the bone that is stationary during contraction
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

Origin refers to the attachment point to the bone that is stationary during contraction.

Answer: D
 Insertion refers to the attachment point to the bone that moves during contraction.

Answer: A
 Skeletal muscle is a type of muscle that is attached to bones and responsible for voluntary movement.

Answer: E
 Actin is a protein that is one of the main components of the thin filaments in muscle fibers.

Answer: F
 Myosin is a protein that is one of the main components of the thick filaments in muscle fibers.

Answer: G
 Motor unit refers to a single motor neuron and all of the muscle fibers that it innervates.

Answer: H
 Neuromuscular junction refers to the point of contact between a motor neuron and a muscle fiber.

Answer: I
 Isotonic refers to a type of muscle contraction where the muscle changes length while maintaining a constant force.

Answer: J
 Isometric refers to a type of muscle contraction where the muscle maintains a constant length while exerting a force against an immovable object.

Match Each of the Terms with Its Definition or Explanation