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Flashcards in the nervous system Deck (13):
1

what makes up our central nervous system?

the brain and spinal cord

2

what does the brain do?

it coordinates all of your body activities, made up of 100 billion neurons

3

what is the largest part of your brain?

the cerebrum

4

what does the cerebrum do?

it is where thinking occurs, impulses from the senses are interpreted, memory is stored, and movements are controlled

5

what does the cerebellum do?

it is able to coordinate voluntary movements, maintain muscle tone, and help maintain balance.

6

what does the medulla do?

it controls involuntary actions, breathing, heartbeat, blood pressure, also involved in sneezing, coughing, swallowing, and vomiting

7

what are the two major divisions of the peripheral nervous system?

somatic and autonomic

8

what does the somatic system do?

it controls voluntary actions, made up of cranial and spinal nerves

9

what does the autonomic system do?

it controls involuntary actions, those not under conscious control

10

what are the 3 main types of nerve cells?

1. sensory neuron
2. relay neuron
3. motor neuron

11

what does the sensory neuron do?

they are responsible for converting external stimuli from the organism’s environment into electrical impulses

12

what does the relay neuron do?

they create neural circuits, enabling communication between sensory or motor neurons and the central nervous system

13

what do motor neurons do?

they transmit from the brain and spinal cord to the muscles