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Flashcards in Nervous Deck (40):
1

transmission of an impulse from one neuron to the next is called...

Synaptic transmission

1


Acetycholine and norepinephrine are examples of?

Neurotransmitters

2


What do somatic reflexes involve?


Contraction of skeletal muscles

3

Signals are transmitted from one nerve to another via?

Neurotransmitters 

3

Deep grooves in the cerebrum 

Fissures

4

The three layers of the meninges.

1. Dura Mater

2. Arachnoid

3. Pia Matter

4

Shallow grooves in the cerebrum 

Sulci

5

What are the three parts of the brain stem?

1. Midbrain

2. Pons

3. Medulla Oblongata

6

What are the three main activities of the nervous system?

1. Sensory Functions

2. Integrating Functions

3. Motor Functions

6

What state is a neuron in when it is not being stimulated?

Resting state

7

What is a synapse?

The junction between two neurons or a neuron and a target cell.

7

What is the second largest component of the brain?

Cerebellum

10

what are the two main divisions of the nervous systems

peripheral nervous system  (PNS)   and the  central nervous systems  (CNS)

11

what ions are involved in nerve conduction

sodium and potassium

12

which area of the brain is responsible for higher order functions

cerebrum

14

What is the name of the fibers that connects the two halves of the cerebral cortex?

Corpus callosum

16

Which system is voluntary control of skeletal muscles in?

Somatic nervous system

17

The small gaps in the myelin sheath between the glial cells is called?

Nodes of Ranvier

18

What does the cerebellum allows the body to do?

coordinated movement, balance, posture and complex reflexes

19

What is the connection between the rest of the brain and the spinal cord ?

Brain stem

20

What conducts nerve impulses away from the CNS?

Efferent nerves

20

What does the tightly capillary wall and additional glial cell membranes prevents?

drugs, proteins, ions and other molecules from passinf from the blood into the brain

21

What's the sympathetic nervous system often called

fight or flight system

22

What part of the nervous system that controls smooth muscle, cardiac muscle and endocrine glands automatically without conscious control.

Automatic nervous system

23

Which Cranial nerves are motor nerves

CN III-Oculomotor

CN IV-Trochlear

CN VI-Abducent

CN XI-Accessory

CN XII-Hypoglossal

25


Which cranial nerves are both sensory and motor nerves

CN V- Trigeminal

CN VII- Facial

CN IX-Vestibulocochlear

X-Vagus

26

The ________ is often covered by a fatty substance called _______

Axons & myelin

27

What is depolarization?

Refers to the opening of the sodium channesl and the sudden influx of many sodium ions into the cell.

28

______ is located in the cell membrane and actively pumps NA out and K ions in to the neuron.

Sodium-potassium pump

29

Where is grey matter located?

Outer layer of the brain and center of the spinal cord

30

What is the withdrawal reflex also called?

Flexor reflex

31

What type of nerve is the Olfactory?

Sensory

32

What is the primary neurotransmitter of the parasympathetic nervous system? 

Acetylcholine

34

Where is white matter located? 

The outer part of the spinal chord and the inner part of the brain

35

Axons conduct nerve impulses ______ from the cell body toward another neuron or an _________.

away,  effector cell

36

What does cerebrospinal fluid do? 

Provides cushioning and may regulate autonomic functions (i.e. respiration, vomiting)

37

The CNS is composed of

the brain, and spinal cord

38

Which neurotransmitter can be either excitatory or inhibitory depending on location

Acetylcholine

39

What do Afferent nerves do

conduct nerve impulses toward the CNS

40



Which cranial nerves are sensory nerves

CN I - Olfactory 

CN II- Optic

VIII-Vestibulocochlear