Final Jeopardy QuestionFinal Jeopardy Question

Nervous System

Classification

Brain Anatomy

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NervesBrain

protection

Brain Anatomy

2Nerve

impulse

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a. Somatic nervous system

b.Autonomic nervous

The 2 subdivisions of MOTOR are

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1. the central nervous system (brain/spine)

2. muscles / glands

Motor (efferent) division carries an impulse from _________ to ________.

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1. Nerve fibers or sense organs or “senses”

2. the central nervous system (spine/brain)

Sensory (afferent) division carries an impulse

from ________ to ________.

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a. Nerves outside the brain and spinal cord

The Peripheral nervous system (PNS)

includes:

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Brain & Spinal cord

The Central nervous system

(CNS) includes

The sections of sensory & motor regions of the brain and the amount of brain “power” they “supply” to different parts of the body can be visualized using the

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homunculus

The surface of the brain has ridges called _________ and shallow grooves called ___________

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gyri- (“ji’ re”) & sulci- “(sul’ki”)

Provides coordination of body movements. Takes information for inner ear & the rest of the body

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Cerebellum

Contains important control centers including:

a. Heart rate control

b. Blood pressure regulation

c. Breathing

d. Swallowing

e. Vomiting

BackMedulla Oblongata

Helps regulate body temperature, Controls water balance & Regulates metabolism

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Hypothalamus

A rapid, predictable, and involuntary responses to stimuli is called a

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reflex

Grey matter is found where in the brain?

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Outer layers

The Broca’s area is involved in our ability to _____________ & is located on the _____ side of the brain only.

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Speak / left

Fissures (deep grooves) divide the cerebrum into how many lobes?

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Four (4)

The largest part of your brain is called the

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cerebrum

Brain has the least permeable capillaries of the body which causes

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Brain-blood barrier

Attaches the Meningeal layer to the brain & is web-like

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Arachnoid layer

The general name of the coverings of the brain

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Meninges

Cerebrospinal fluid is similar in composition to

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Blood plasma

This forms a watery cushion to protect the brain

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Cerebrospinal fluid

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Irritability

The ability to respond to stimuli

& convert to a nerve impulse is called

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Depolarization

The exchange of ions which initiates an

action potential in the neuron

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myelin sheath

Impulses travel faster when fibers have a…

Once the Nerve Impulse reaches the axon terminal neurotransmitters are released across the

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Synapse / synaptic gap/ cleft

The nerve impulse is also known as

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Action potential

Spider-like phagocytes which

Dispose of debris

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Microglia or glia

Name the types of cells that cover a nerve cell to increase the speed of the nerve impulse

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Schwann cell

In a neuron this passes the message on

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axon

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dendrite

In a neuron this part brings the message in

The function of a neuron is to…

Transfer impulses or messages

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The AUTONOMIC branch of the nervous system has two (2) subdivisions, what are they?