Nervous System Worksheet

Front 1

Processes that carry the action potential (impulse) away from the cell body are called

Back 1

Axons

Front 2

The short, numerous, receptive processes of a neuron are called

Back 2

Dendrites

Front 3

Gaps in the myelin sheath are called

Back 3

neurofibral nodes (nodes of ranvier)

Front 4

The CNS consists of the _____ and _______

Back 4

Brain, spinal cord

Front 5

The PNS consists of the _______ nerves and _______ nerves

Back 5

Cranial, spinal

Front 6

Neurons that carry an impulse from a sensory receptor to the CNS are called _________ neurons

Back 6

Sensory (afferent)

Front 7

Neurons that carry an impulse from the CNS to a muscle of gland are called ______ neurons

Back 7

Motor

Front 8

Regions of the brain and spinal cord contain myelinated fibers are referred to as ______ matter. Areas with unmyelinated cell bodies are referred to as ______ matter

Back 8

White, gray

Front 9

The outer gray matter of the cerebrum is called the ______ ________ and is divided into five lobes. The four major lobes of the cortex are the _____, _____, _____, and _____ lobes

Back 9

Cerebral cortex; frontal, parietal, occipital, temporal

Front 10

The parietal and frontal lobes are separated by the ______ sulcus

Back 10

Central

Front 11

The ______ sulcus separates the temporal lobe from the parietal and frontal lobes

Back 11

Lateral

Front 12

The motor cortex is located in the ______ gyrus of the _____ lobe

Back 12

Precentral, frontal

Front 13

The cerebral hemispheres are separated by the _____ fissure

Back 13

Longitudinal

Front 14

The elevated ridges along the surface of the cerebral hemispheres are called

Back 14

Gyri

Front 15

The somatosensory cortex is located in the _____ gyrus of the ______ lobe

Back 15

Postcentral, parietal

Front 16

The visual cortex is located in the ______ lobe

Back 16

Occipital

Front 17

The _____ ventricles lie in the cerebral hemispheres and are separated by a thin membrane called the ______ _____

Back 17

Lateral, septum pellucidum

Front 18

The auditory cortex is located in the _____ lobe

Back 18

Temporal

Front 19

The band of white matter (commissure) that connects the cerebral hemispheres is called the ______ _______

Back 19

Corpus callosum

Front 20

The diencephalon consists of the _____, _____, _____, and the ________

Back 20

Thalamus, epithalamus, hypothalamus, and 3rd ventricle

Front 21

The _____ ventricle is located between the masses of the thalamus

Back 21

3rd

Front 22

The pituitary gland attaches to the hypothalamus by a stalk called the

Back 22

Infundibulum

Front 23

The choroid plexus of the third ventricle is a vascular structure which produces a fluid called ______

Back 23

Cerebrospinal fluid (CSF)

Front 24

The brain stem consists of the _____, _____, and the _____ _____

Back 24

Midbrain, pons, medulla oblangata

Front 25

The midbrain consists of two buldging ventral masses called the ______ _______. Dorsally there are four smaller bulges called the ______ ______. The superior part of the dorsal bulges are called the ____ _____ and are concerned with _____ reflexes. The inferior part of the dorsal bulges are called the ____ _____ and are concerned with ____ _____ pathways.

Back 25

Cerebral peduncles, corpora quadrigemina, superior colliculi, visual, inferior colliculi, auditory reflex

Front 26

The part of the brain stem that is continuous with the spinal cord is the _____

Back 26

Medulla

Front 27

The medulla controls many autonomic functions, name three

Back 27

Cardiac center, Vasomotor Center, Medullary respiratory center

Front 28

The third ventricle is connected to the fourth ventricle by the _____ _____, which lies in the midbrain

Back 28

Cerebral aqueduct

Front 29

The medulla is the point of decussation (crossing over) of the motor pathways. Therefore, the right side of the brain controls muscle movement on the _____ side of the body and the left side of the brain controls muscle movement on the _____ of the body.

Back 29

Left, right

Front 30

The cerebellum is concerned with the coordination of ________________

Back 30

Equilibrium, muscle coordination, proprioception

Front 31

The cerebellum is separated from the cerebrum by the _______ fissure

Back 31

Transverse

Front 32

The two lateral hemispheres of the cerebellum are separated by the wormlike _____

Back 32

Vermis

Front 33

The white matter of the cerebellum that is referred to as the "tree of life" is the ____ ____

Back 33

arbor vitae

Front 34

The _______ of the spinal cord is continuous with the fourth ventricle

Back 34

Central canal

Front 35

Spinal nerves contain both _____ and _____ neurons. The ______ root contains sensory neurons which enter the cord at the _____ horn of gray matter. The cell bodies of the sensory neurons are located in the ____ _____ ____. The cell bodies for the motor neurons are located in the _____ horn of gray matter. The axons of the motor neurons are located in the _____ root

Back 35

Sensory, motor, posterior, posterior, posterior root ganglion, anterior, anterior

Front 36

There are ____ pairs of spinal nerves

Back 36

31

Front 37

The spinal cord terminates at about L1-L1 in a cone shaped structure called the ____ _____. The spinal nerves emerging from this point look like a horse tail and are called the _____ ______

Back 37

Conus medullaris, Cauda equina