What Action(s) Do the Gracilis, Hamstring, and Sartorius Muscles Perform

question 9

Multiple Choice

What action(s) do the gracilis, hamstring, and sartorius muscles perform on the lower leg?

• A)flex the leg at the knee joint
• B)extend the leg at the knee joint
• C)a and b
• D)The muscles listed do not move the lower leg.

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Definitions:

Theta Rhythm

A pattern of brainwave activity, typically in the range of 4-8 Hz, associated with stages of sleep and meditative states.

Limbic System

In vertebrates, an action system of the brain. In humans, plays a role in emotional responses, motivation, sexual behavior, autonomic responses, and biological rhythms.

Reflex Action

An automatic, involuntary response to a given stimulus that generally functions to restore homeostasis.

Motor Responses

The physiological reactions of organisms or cells to external stimuli, causing movement or action.