Question

The basic unit of a muscle is _____________? (2 points)
Responses

motor neuron
motor neuron

fast twitch
fast twitch

slow twitch
slow twitch

muscle fiber

Answer 1

The basic unit of a muscle is **muscle fiber**.

Answer 2

Slow-twitch muscle fibers are used for explosive movements, like sprinting. (2 points)
Responses

True
True

False

Answer 3

**False**. Slow-twitch muscle fibers are not used for explosive movements; they are more suited for endurance activities, such as long-distance running. Explosive movements like sprinting primarily utilize fast-twitch muscle fibers.

Answer 4

A group of muscle fibers is know as a _____________?(2 points)
Responses

slow twitch
slow twitch

motor unit
motor unit

fast twitch
fast twitch

muscle fiber

Answer 5

A group of muscle fibers is known as a **motor unit**.