The Brain - 9.3 - The Motor Functions Flashcards

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1
Q

TRUE or FALSE:
The somatic motor division controls the voluntary muscles.

A

TRUE.

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2
Q

TRUE or FALSE: The somatic motor divisions controls the skeletal muscles.

A

TRUE.

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3
Q

The decision to make a voluntary muscular movement starts (originates) in the ______________ of the frontal lobe.

A

Motor Association Area

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4
Q

A “plan of action” is made by the ______________ of the frontal lobe.

A

Motor Association Area

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5
Q

The motor association area sends “a plan of action” of what muscles need to contract to the:

A

Primary motor cortex

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6
Q

The primary motor cortex contains:

A

The neurons that control the motor (efferent) neurons.

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7
Q

The primary motor cortex is located in the _______________ gyrus of the frontal lobe.

A

Precentral

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8
Q

The precentral gyrus is found _________ to the central sulcus.

A

Anterior (towards the front)

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9
Q

The precentral gyrus is part of the ___________ lobe.

A

Frontal

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10
Q

Axons from the primary motor cortex descend through the brainstem and travel down ___________ tracts of the spinal cord.

A

Descending

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11
Q

Most of the neurons from the primary motor cortex ______________ (cross to the other side) in the medulla oblongata.

A

Decussate

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12
Q

Most of the trunk, upper limbs, and lower limbs muscles are controlled by the ____________ side of the brain.

A

Opposite

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13
Q

Broca area is located usually on the left side of the _______________ lobe.

A

Frontal

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14
Q

What is the function of Broca area?

A

To make a “plan” of action for the muscle contractions of the larynx, tongue, cheeks and lips to form words used in speaking.

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15
Q

What part of the brain is important in maintaining muscle tone and posture, coordinating body movements and monitors the body’s position to help with balance?

A

The cerebellum – it allows us to move smoothly and help the frontal lobe out with minor adjustments to maintain our posture and equilibrium.

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