CB: The Brain

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Pons

A bridge-like structure that contains numerous fibers that carry signals between regions of the brain.

Corpus Callosum

A mass of fibers that carry signals between the two cerebral hemispheres.

Olfactory Bulb

Associated with our understanding of smell.

Cranial Nerves

At the base of the brain. Bring nerve impulses from the senses for interpretation and return impulses to provoke appropriate responses.

Midbrain

Contains fibers that transmit sensory impulses from the spinal cord to the thalamus, and motor impulses from the cerebral cortex back to the spinal cord.

Brain Stem

Continuous with the spinal cord. Consists of the midbrain, the pons, and the medulla oblongata.

Cardiac Center

In the medulla oblongata. Consists of a mass of neurons that regulates heart rate.

Respiratory Center

In the medulla oblongata. Regulates the depth and rate of breathing.

Vasometer Center

In the medulla oblongata. Regulates the diameter of blood vessels.

Thalamus

Part of the diencephalon. Consists of paired massed of gray matter organized into bodies called nuclei. Acts as a relay station for sensory impulses traveling to the cerebral cortex.

Hypothalamus

Regulates the physiological equilibrium of the body. Pituitary glands located in the ------ release hormones.

Cerebellum

Second largest portion of the brain. Two hemispheres and surface folds. Coordinates and controls movements initiated by the cerebrum.

Diencephalon

Second major part of the brain. Surrounds an enlarged, fluid filled space called the third ventricle.

Medulla Oblongata

Section that is continuous with the spinal cord. Contains gray matter that receives signals from the spinal cord.

Cerebrum

The largest part of the brain. Controls all conscious processes. Two hemispheres and surface folds.


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