Module 4-the Nervous System And The Endocrine System

Question 0

What is a dendrite?

Answer 0

The branching extensions of a neuron that receive information and conduct impulses toward the cell body

Question 1

What are neurons?

Answer 1

The building blocks of the nervous system

Question 2

What is the Soma

Answer 2

The cell body of a neuron, which contains the Nucleus and other parts that keep the cell healthy

Question 3

Axon terminal button?

Answer 3

The end point of a neuron where neurotransmitters are stored

Question 4

Axon?

Answer 4

The extension of a neuron through which neural impulses are sent, passes messages away from the cell body to other muscles, neurons or glands

Question 5

Myelin sheath?

Answer 5

Protects the axon and influences the speed of the neural impulse

Question 6

What tasks do neurons perform?

Answer 6

1. Retrieve information 2. Carry the information 3. Pass the information

Question 7

When a neuron fires, what is the neural impulse called?

Answer 7

Action potential

Question 8

What is an action potential?

Answer 8

A brief electrical charge that travels down the dendrites of a neuron

Question 9

Each action potential is followed by a brief

Answer 9

Recharging phase- refractory period

Question 10

When the neuronis recharged, at rest, and he will generating another action potential,

Answer 10

A resting potential exists

Question 11

What is the all or none principal

Answer 11

This means that a neuron always fires of the same intensity

Question 12

How do you messages travel from under onto the next

Answer 12

And everyplace were an axon terminal one neuron and the dendrite of an accident near on wheat, there’s a tiny fluid filled got caught us in at that action potential potential cannot jump. In this gap, chemical messengers not as neurotransmitters travel across the synapse to carry the information from under onto the next. The neurotransmitters can come to rest only receptor sites to find that their shape, just as a key can open locks on the configuration

Question 13

What is the central nervous system

Answer 13

Includes the brain and the spinal cord. The brain is where most of the information processing takes place, and the spinal cord is the main pathway information follows as it enters and leaves the brain.

Question 14

What is the peripheral nervous system

Answer 14

Contains all sensory nerves and motor nerves that connect the brain and spinal cord to the rest of the body. The peripheral nervous system divides into two subsystems

Question 15

What are the two subsystems of the peripheral nervous system

Answer 15

The somatic nervous system and the autonomic nervous system

Question 16

What is the somatic nervous system

Answer 16

The division of the peripheral nervous system that controls the body skeletal muscles. Contains the motor nerves needed for the voluntary muscles.

Question 17

What is the autonomic nervous system

Answer 17

The division of the peripheral nervous system that controls the glands and muscles of the internal organs it subdivisions of the sympathetic division and the parasympathetic division. Monitors the autonomic functions. Controls breathing, blood pressure and digestive processes.

Question 18

What is the sympathetic nervous system

Answer 18

The part of the autonomic nervous system that arouses the body to deal with perceived threats

Question 19

What is the parasympathetic nervous system

Answer 19

Calms the body, bring the body back down to a relaxed state

Question 20

The bodies other system for communicating information is called

Answer 20

Endocrine system

Question 21

This system is slower to awaken and storage shed down in the nervous system. It consists of a set of blank that produce what

Answer 21

Glands that produce hormones

Question 22

What are hormones

Answer 22

Her mom’s a chemical messengers that circulate throughout the body in the blood

Question 23

Hormones and what are similar in function and why

Answer 23

Hormones and neurotransmitters are similar in function. Both carry messages and both communicate by locking into receptor sites.

Question 24

What is the most important gland in the endocrine system

Answer 24

The pituitary gland

Question 25

Why is this the most important gland

Answer 25

Because it is the endocrine system master gland the pituitary gland in conjunction with the brain, controls the other endocrine glands

Question 26

What is serotonin

Answer 26

Neurotransmitter that affects mood, hunger, sleep, and arousal

Question 27

What is dopamine

Answer 27

Neurotransmitter that influences movement, learning, attention, and emotion