Chapter 13 - Ha&p

Front 1

How many Cranial nerves are there and where do their branches arise from?

Back 1

- 12 cranial nerves, they arise from the brain

Front 2

how many spinal nerves are there and where do they arise from?

Back 2

There are 31 spinal nerves and they arise from the spinal cord.

Front 3

Define "ganglia"

Back 3

cluster of cell bodies

Front 4

dorsal root ganglia vs. other root ganglia

Back 4

dorsal root gangl: sensory neuron cell bodies

other root gangl: autonomic motor neuron cell bodies

Front 5

sensory receptors are

Back 5

afferent neurons.

Front 6

What are the 2 functional divisions of the PERIPHERAL Nervous System?

Back 6

Sensory (AFFERENT) division & Motor (EFFERENT) division

Front 7

SENSORY DIV.: Where do the somatic sensory fibers carry impulses from?

Back 7

somatic sensory fibers carry impulses from skin, skeletal muscles, joints and special senses to CNS

Front 8

SENSORY DIV.: Where do the visceral sensory fibers carry impulses from?

Back 8

visceral sensory fibers carry impulses from visceral organsto CNS

Front 9

MOTOR DIV.: has how many systems?? and what are the systems called?

Back 9

There are two parts to the motor division, the somatic and autonomic nervous system.

Front 10

Motor Div.: Where do the somatic motor fibers carry impulses from? (somatic)

Back 10

somatic motor fibers carry impulses from the CNS to skeletal muscles

Front 11

Motor Div.: Where do the visceral motor fibers carry impulses from? (autonomic)

Back 11

visceral motor fibers carry impulses from the CNS to smooth muscle, cardiac muscle and glands

Front 12

What are the functional SUBDIVISIONS of the AUTONOMIC nervous system?

Back 12

Sympathetic and Parasympathetic

Front 13

Nerves are bundles of parallel axons (which vary in size) classified as:

Back 13

mixed nerve

sensory (Afferent) nerve

motor (efferent) nerve

Front 14

Mixed Nerves

Back 14

contains both sensory & motor fibers (carry impulses to/from CNS)

Front 15

Sensory (Afferent) Nerve

Back 15

only carry impulses toward CNS

Front 16

Motor (Efferent) Nerve

Back 16

only carry impulses away from CNS

Front 17

Each nerve is wrapped around in protective CT coverings including:

Back 17

Endoneurium
Perineurium

Epineurium

Front 18

ENDONEURIUM

Back 18

ENCLOSES EACH AXON

Front 19

PERINEURIUM

Back 19

AROUND A NERVE FASCICLE (BUNDLE)

Front 20

EPINEURIUM

Back 20

SURROUNDS ALL FASCICLES

Front 21

HOW DO THE SPINAL NERVES EXIT THE CORD?

Back 21

VIA THE INTERVERTEBRAL FORAMEN

Front 22

NAME THE SPINAL SEGMENTS

Back 22

8 - CERVICAL NERVES (C1-C8)

12 - THORACIC NERVES (T1-T12)

5- LUMBAR NERVES (L1-L5)

5- SACRAL NERVES (S1-S5)

1 - COCCYGEAL NERVE (Co 1)

Front 23

SPINAL NERVES ARE MIXED NERVES, MEANING:

Back 23

SENSORY AND MOTOR NERVES

Front 24

WHAT ARE THE TWO KINDS OF REFLEXES?

Back 24

SOMATIC REFLEX: SKELETAL MUSCLE CONTRACTION

AUTONOMIC REFLEX(VISCERAL): SMOOTH/CARDIAC MUSCLE AND GLANDS

Front 25

WHATS A RELEX ARC?

Back 25

SPECIFIC NEURAL PATHWAY

Front 26

WHAT ARE THE 5 COMPONENTS OF A REFLEX ARC?

Back 26

a) Sensory receptor
b) Sensory (afferent) neuron
c) Integrating center
d) Motor (efferent) neuron
e) Effector

Front 27

Cranial Nerves

Back 27

12 pairs of cranial nerves (I to XII)that arise from the brain

Part of the peripheral nervous system

Some nerves are sensory in functionas they carry axons of sensory neurons (I, II, VIII)

Some nerves are motor in function as they carry axons of motor neurons (III,IV, VI, XI, XII)

Others are mixed nerves because theycontain axons of both sensory and motor neurons (V, VII, IX, X)