Anatomyl

Front 1

These roots only cantain sensory fibers, which conduct nerve impulses form the periphery into the central nervous system.

Back 1

Posterior or dorsal roots

Hint 1

front and back

Front 2

Each posterior root also has a swelling which contains the cell bodies of sensory neurons.

Back 2

posterior or dorsal root ganglion

Hint 2

gang

Front 3

Contains axons of motor nuerons which conduct impulses from the CNS to effector organs and cells

Back 3

Anterior or ventral root

Hint 3

front or back

Front 4

Two grooves penetrate the white matter of the spinal cord and divide it into right and left sides

Back 4

Anterior median fissure and the posterior median sulcus

Hint 4

middle

Front 5

Deep wide groove on the anterior side of the spinal cord

Back 5

anterior median fissure

Hint 5

front

Front 6

shallow narrow groove on the posterior surface of the spinal cord

Back 6

posterior median sulcus

Hint 6

back middle pouting

Front 7

forms the cross bar of the H shaped gray matter of the spinal cord

Back 7

Gray commissure

Hint 7

non

Front 8

In the center of the gray commissure is a small space called the ____ _____

Back 8

Central canal

Hint 8

extends the entire length of the spinal cord

Front 9

Anterior to the gray commissure; connects the white matter of the right and left sides of the spinal cord

Back 9

Anterior white commissure

Hint 9

below cross bar of H shape

Front 10

Gray matter on each side of the spinal cord is subdivided into regions called ______

Back 10

horns

Hint 10

of a bull

Front 11

These horns contain cell bodies of somatic motor neurons and motor nuclei.

Back 11

Anterior (ventral) gray horns

Hint 11

back of spinal cord facing front (ventral) side of body

Front 12

Contain somatic and autonomic sensory nuclei

Back 12

Posterior (dorsal) gray horns

Hint 12

front of spinal cord facing back side of body

Front 13

Between the anterior and posterior gray horns; contain cell bodies of autonomic motor neurons that regulate activity of smooth muscle, cardiac muscle and glands only in thoracic, upper lumbar, and sacral segments of the cord

Back 13

lateral gray horns

Hint 13

side

Front 14

The anterior and posterior gray horns divide the white matter into three broad areas called:

Back 14

Columns

Hint 14

anterior, posterior, and lateral white _____

Front 15

Each column, in turn, contains distinct bundles of nerve axons having a common origin or destination and carrying similar information. These bundles are called

Back 15

Tracts; Sensory (ascending tracts);motor (descending tracts)

Front 16

Consist of axons that conduct nerve impulses toward the brain.

Back 16

Sensory (ascending) tracts

Hint 16

going up

Front 17

Tracts consisting of axons that carry nerve impulses down the cord.

Back 17

Motor descending tracts

Hint 17

going down to motivate

Front 18

The white matter tracts in the spinal cord are highways for:

Back 18

nerve impulse conduction

Hint 18

3 words

Front 19

Sensory information from receptors travels up the spinal cord to the brain along two main routes on each side of the cord the _______ _______ and ______ ______

Back 19

spinothalamic tracts and posterior columns

Hint 19

a tract and a column

Front 20

These two tracts convey impulses for sensing pain, temperature, deep pressure and crude poorly localized sense of touch

Back 20

spinothalamic tracts

Hint 20

begins in the spinal region;ends in the thalamus region

Front 21

These columns carry nerve impulses for awareness of movement; fine touch; two point touch discrimination; pressure and vibration

Back 21

posterior columns

Hint 21

back side not a track

Front 22

Most regulation of involuntary activities of smooth muscle, cardiac muscle and glands by the autonomic nervous system originates in the ?

Back 22

brain stem and hypothalamus

Hint 22

2 parts

Front 23

superficial gray matter of the cerebrum that plays a major role in controlling precise, voluntary muscular movements

Back 23

Cerebral cortex

Hint 23

non

Front 24

convey nerve impulses that originate in the cerebral cortex and are destined to casuse precise, voluntary movements of skeletal muscles

Back 24

Direct pathways

Hint 24

pathway

Front 25

convey nerve impulses from the brain stem and other parts of the brain that are destined to program automatic movements, help coordinate body movements with visual stimuli, maintain skeletal muscle tone and posture

Back 25

Indirect pathways

Hint 25

pathway

Front 26

The distal end of a sensory neuron (dendrite); It respond to specific stimulus by triggering one or more nerve impulses in the sensory neuron.

Back 26

Sensory receptor

Hint 26

receives stimulus

Front 27

The nerve impulses propagate along the axon of the sensory neuron to the axon terminals which are located in the gray matter of the spinal cord or brain stem

Back 27

Sensory receptor

Hint 27

non

Front 28

A reflex pathway having only one synapse in the cns

Back 28

monosynaptic reflex arc

Hint 28

arc

Front 29

Impulses triggered by the integrating center propagate out of the cns along a motor neuron to the part of the body that will respond.

Back 29

Motor neuron

Hint 29

non

Front 30

The part of the body tht responds to the motor nerve impulse, such as a muscle or gland.

Back 30

Effector

Hint 30

E