Nervous System Chapter 9

Front 1

The nervous system is composed of what?

Back 1

neurons and neuroglia

Front 2

What is at the end of peripheral nerves and gather information and converts it into nerve impulses

Back 2

sensory receptors

Front 3

sensory impulses are intergrated into the brain as

Back 3

perception

Front 4

what is the intergrative function of the nervous system?

Back 4

perception

Front 5

conscious or subconscious decisions follow leading to motor functions via the what

Back 5

effectors

Front 6

The central nervous system is made up of the?

Back 6

brain and spinal cord

Front 7

The peripheral nervous system is made up of the ?

Back 7

Receptors and the peripheral nerves that connect the cns to the rest of the body

Front 8

a nerron has a?

Back 8

Cell body

Front 9

a bundle of nerve fibers are called

Back 9

Axons

Front 10

nerv fibers include a solitary out going axon and numerous what?

Back 10

Dentrites

Front 11

Dendrites do what?

Back 11

Bring in the impulses from the receptors(recieves messages)

Front 12

What are the three types of neurons? (classified by structure

Back 12

Multipolar,Bipolar, unipolar

Front 13

how do the three differ?

Back 13

By the number of dendrites

Front 14

What are afferent neurons that conduct impulses from the peripheral receptors to the CNS

Back 14

sensory neurons

Front 15

Sensory neurons are usually what type of neuron?

Back 15

unipolar

Front 16

What are the neurons that are multipolar that lie within the CNS and form links between other neurons?

Back 16

interneurons

Front 17

What neurons are multipolar and conduct impulses from the CNS to the effectors?

Back 17

Motor neurons also called efferent neurons

Front 18

The junction between two communicating neurons is called the

Back 18

synapse

Front 19

what is between two communicating neurons that the synapse has to go through?

Back 19

synaptic cleft

Front 20

What is the largest most complex portion of the nervous system and contains 100 billion multipolar neurons?

Back 20

The brain

Front 21

The divisions of the brain are?

Back 21

Cerebrum, cerebellum, diecephalon, and brainstem

Front 22

What is the largest portion of the brain?

Back 22

THe cerebrum

Front 23

The cerebrum is divided into how many hemispheres?

Back 23

2

Front 24

A deep ridge of nerve fibers is called?

Back 24

The corpus callosum

Front 25

The corpus callosum connects what?

Back 25

The two hemispheres of the cerebrum

Front 26

The surface of the brain is marked by what?

Back 26

Ridges called convolutions

Front 27

Covolutions are seperated by what?

Back 27

Grooves Deep ones called fissure and shallow ones called sulcus

Front 28

The Diencephalon contains what two things?

Back 28

The Thalamus and the hypothelamus

Front 29

What does the Thalamus do?

Back 29

sorts and directs sensory information performs the service of both messenger and editor

Front 30

What does the Hypothelamus do?

Back 30

maintains homeostasis by regulating a wide variety of visceral activity. links the endocrine system with the nervous system

Front 31

the brainstem consist of what

Back 31

Pons, midbrain and the medulla oblongata

Front 32

The brainstem lies at the base of the what?

Back 32

cerebrum

Front 33

The brainstem connects the brain to the what?

Back 33

spinal cord

Front 34

What are the functions of the midbrain?

Back 34

convey impulses to and from the cerebrum

Front 35

What are the functions of the pons?

Back 35

regulates breathing and blood pressure

Front 36

What are the functions of the Nedulla oblongata?

Back 36

To transmit asending and desending impulses

Front 37

What are the functions of the cerebellum?

Back 37

is a reflex center for integrating sensory information concerning the position of body parts(balance muscle movement and posture

Front 38

The autonomic Nerous system does what?

Back 38

Helps to maintain homeostatis with or without concious help

Front 39

Neurons are what?

Back 39

Masses of nerve cells and they are the structual and functional units of the nervous system

Front 40

Neuroglial cells provide what for a neuron?

Back 40

Physical support, insulation and nuetrients

Front 41

What fills spaces provides stuctural framework, produces the lipoprotein myelin and carrys on phagocytosis?

Back 41

THe neuroglia

Front 42

Microglial cells are located where?

Back 42

CNS

Front 43

Microglial cells do what?

Back 43

Support neurons and phagocytize bacteria cells and cellular debri

Front 44

What does the Oligodendrocytes do?

Back 44

they provide insulating layers of myelin which is called a myelin sheath around the axon CNS

Front 45

What do the Astrocytes do?

Back 45

Found between neurons and blood vessels and they provide sturctural support and form scar tissue CNS

Front 46

What is a Ependymal cell and what does it do?

Back 46

forms inner linings that enclose spaces within the brain and the spinal cord CNS

Front 47

A neuron includes 3 common features what are they?

Back 47

a cell body, dendrites and an axon

Front 48

Nerves can be what kinds?

Back 48

Sensory motor or mixed

Front 49

what forms a myelin sheath around an axon in the pns

Back 49

Schwann cells