Assignment 7a - HW 7A - LastName_FirstName McDonald_Madeleine Assignment 7A KINE_2850 Section 500

LastName_FirstName McDonald_Madeleine Assignment # 7A

KINE_2850 Section # 500 Date 10/16/2016

Label the Motor Neuron

1. Dendrite

2. Cell body

3. Nucleus

4. Myelin Sheath

5. Axon

Divisions of the Central Nervous System

Instructions: Please name the four major sections of the brain explained in your textbook. In your own words

describe key functions of these sections and parts important to those sections. No less than 3 sentences of

descriptions.

Section of the Brain Description

Cerebrum Cerebrum is the largest part of the brain that

controls all conscious thoughts and memories. It is divided into a left and right hemisphere and

protected by the cerebral cortex. It controls all voluntary action as well as hearing, speech, vision,

emotions, and personality.

Cerebellum The cerebellum is located under the cerebrum and

plays a key role in motor control. The cerebellum is in charge of maintaining balance and posture,

coordinating voluntary movements, and motor learning. It also takes part in some cognitive

function, such as language. Damage to the cerebellum results in disorders in equilibrium, posture,

and motor learning.

Diencephalon The diencephalon contains the thalamus and

hypothalamus. The diencephalon relays sensory information to the brain and controls autonomic

funtions of the peripheral nevous system. The thalamus controls sleep cycles, sensory perception,

and regulation of motor function. The hypothalamus controls autonomic functions such as heart

rate through the release of hormones, and it also controls emotions.

Brain stem The brain stem is comprised of the medulla

oblongata, the pons, and the midbrain. It connects the base of the brain to the spinal cord. It

controls the flow of sensory information between the brain and the rest of the body. The midbrain

processes visual and audible sensory information. The pons processes sensory information for

subconscious somatic procceses like breathing. The medulla oblongata processes sensory

information to direct autonomic function of heart, lungs, and other organs of body.

Assignment 7a - HW 7A