Anatomy Ch. 14 Nervous Tissue

Front 1

What are the two parts of the central nervous system?

Back 1

Brain
Spinal chord

Front 2

What are the parts of the peripheral nervous system?

Back 2

1. cranial nerves
2. Spinal nerves
3. Ganglia

Front 3

Nerves that extend from the brain?

Back 3

Cranial

Front 4

Nerves that extend from the spinal chord

Back 4

Spinal

Front 5

What do you call clusters of neurons outside the CNS

Back 5

Ganglia

Front 6

What do you call the division of information coming in from the periphery to the CNS? And different types?

Back 6

Sensory or AFFERENT
1. somatic
2. special senses
3. visceral

Front 7

Information about pain, skin temp, touch, pressure and position of body parts

Back 7

Somatic sensory

Front 8

Visual, taste, smell, sound and equilibrium information

Back 8

Special senses

Front 9

Information about core body temperature, stretching of internal organs. Like bladder or stomach, blood pressure and pH, queasiness

Back 9

Visceral senses

Front 10

What division in the NS contols Motor commands going from the CNS

Back 10

Motor or efferent

Front 11

control of skeletal muscle

Back 11

Somatic

Front 12

Controls smooth muscle, cardiac muscle and glands

Back 12

Autonomic

Front 13

What are the large number neurons, primarily in the CNS, that are devoted to processing info & making plans

Back 13

Integrative and cognitive Division

Front 14

How many neurons are in a human?

Back 14

about 1 billion

Front 15

What are some characteristics of neurons?

Back 15

1. high metabolic rates
2. Long lived cells (lifetime)
3. transmit impulses
4. many shapes

Front 16

What does the cell body of a neuron have?

Back 16

mitochondria, ribosomes, & other organelles, nucleus

Front 17

What do you call the regions of a neuron that Gathers incoming information and can be quite numerous?

Back 17

Dendrite

Front 18

The part of the neuron that Transmits action potentials to send info to other cells

Back 18

Axon

Front 19

What do you call branches of axons on a neuron?

Back 19

axon collaterals

Front 20

Extreme tips of axon that is half of a synapse?

Back 20

Synaptic knobs

Front 21

What type of neuron
Transmits sensory information into the CNS?

Back 21

Sensory neurons

Front 22

Entirely within the CNS, these neurons retrieve, process and store info?

Back 22

interneurons

Front 23

what type of neruron Transmits motor commands outward from the CNS to effectors (muscles or glands)

Back 23

Motor neurons

Front 24

How many glial cells in a person

Back 24

900 bilion

Front 25

The role is to support and protects neurons and do not transmit nerve impulses?

Back 25

Glial cells

Front 26

Types of glial cells in CNS

Back 26

1. astrocytes
2. Ependymal
3. microglia
4. oligodendrocytes

Front 27

These glial cells are star shaped, most abundant, help form blood brain barrier, which protects the neurons in the CNS from many toxins in the blood

Back 27

Astrocytes

Front 28

These glial cells line the ventricles and make cerebrospinal fluid?

Back 28

Ependymal Cells

Front 29

These are small glial cells that scavenge dead or damaged tissue. Only about 5% of glial cells

Back 29

Microglia

Front 30

Form myelin sheaths around axons of CNS which makes them travel faster

Back 30

Oligodendrocytes

Front 31

What are the two types of PNS glial cells?

Back 31

1. satellite
2. neurolemmoctyes

Front 32

Protect the PNS neurons from the harsher environments of the body?

Back 32

Satellite cells

Front 33

Myelinate axons of many PNS neurons?

Back 33

Neurolemmocytes

Front 34

Bundles of axons that run together
seen macroscopically
Present only in the PNS

Back 34

Nerves

Front 35

What are the three layers of a nerve?

Back 35

1. endoneurium
2. perineurium
3. epineurium

Front 36

Surround an individual axon and its myelin sheath?

Back 36

Endoneurium

Front 37

Surrounds bundles of axons called fassicles

Back 37

perineurium

Front 38

Surrounds entire nerve

Back 38

Epineurium

Front 39

What are the different types of nerves

Back 39

1. Sensory
2. motor
3. mixed

Front 40

Contain axons of sensory neurons

Back 40

Sensory nerves

Front 41

contains axons of motor neurons

Back 41

Motor nerves

Front 42

Contain axons of both sensory and motor neurons?

Back 42

Mixed nerves

Front 43

What do you call the neuron that is transmitting signal?

Back 43

Presynaptic cell

Front 44

Neuron, muscle, or glandular cell that is receiving the signal?

Back 44

postsynaptic cell