Nervous System

Question 1

the main organ systems that are responsible for the body’s communication network

Answer 1

endocrine and nervous system

Question 2

Cnidarians, echinoderms, and coelenterates

lack a true nervous system but have a system of separate but connected nerve cells called ________

Answer 2

nerve net

Question 3

have bilateral symmetry defined head and a tail region that are equipped with central nervous system, two nerve cords and peripheral nervous system

Answer 3

flat worms

Question 4

neurons that cluster together forming a small brain found in flat worms

Answer 4

ganglia

Question 5

have no brain in general

Answer 5

mollusks

Question 6

concentrated nerve knots in mollusks

Answer 6

ganglia spread

Question 7

developed a more organized central, peripheral and sympathetic nervous system

Answer 7

earthworms

Question 8

have more complex nervous system with centralized and specialized structures

Answer 8

vertebrates

Question 9

the physical connected networks that make up the nervous system

Answer 9

nerve cells

Question 10

made up of specialized neurons that can transmit and receive electrical signals and gilia cells that provide support and function to other neurons

Answer 10

nervous system

Question 11

contains the nucleus switch controls all cell activities. It is like a switch board.

Answer 11

cell body (soma)

Question 12

branch of thread-like structure which receives messages from neighboring cells

Answer 12

dendrites

Question 13

single, long, tail-like fiber that carries messages away from cell body

Answer 13

axon

Question 14

covers axon which speeds up the travel of nerve impulse

Answer 14

myelin sheath

Question 15

feather-like fibers at the far end of axon. It pass on impulse to the dendrites to other neuron

Answer 15

axon terminals

Question 16

are scattered into voluminous number, they perform multiple functions such as providing support for the brain, repairing, maintenance, insulating neurons, assisting in development of the nervous system and provide metabolic functions for the neurons

Answer 16

neuro glia

Question 17

detect stimuli and transmit signals to the brain

Answer 17

sensory neuron

Question 18

receives signals from sensory neurons and passes them within the brain and spinal cord it will processed

Answer 18

interneurons neuron

Question 19

relays processed message to tissues in the body, such as muscles for action

Answer 19

motor neurons

Question 20

uses energy to actively transport sodium ions out of the cell and take potassium ions into the cell, thereby maintaining the resting potential of the neurons

Answer 20

sodium-potassium pump

Question 21

if sodium ions are outside of the cells and if potassium ions are inside the cell

Answer 21

resting potential

Question 22

(hearing an alarm), if sodium ions rush into the cells and if potassium rush outside the cell

Answer 22

action potential

Question 23

a gap or space between neurons and effectors

Answer 23

synapse

Question 24

command center for the entire body. It processes information and sends instructions the parts of the body

Answer 24

central nervous system

Question 25

a covering that protect the brain

Answer 25

meninges

Question 26

largest region of the brain. It is primarily involved in processing and interpreting stimulus

Answer 26

cerebrum

Question 27

located beneath the cerebrum and divided into hypothalamus and thalamus

Answer 27

diencephalon

Question 28

second largest part of the brain. It is for coordination of muscle and balance

Answer 28

cerebellum

Question 29

connects brain with spinal cord. It coordinates many survival functions of the body such as breathing, heart rate, sleep and wakefulness.

Answer 29

brainstem

Question 30

responsible for emotions

Answer 30

limbic system

Question 31

provide link between brain and the rest of the body. Involved in fast motor reflex such as quick unconscious movements

Answer 31

spinal cord

Question 32

consists of collection of nerves connecting CNS to all organs of the body. It is like electrical wirings. Make use of sensory neurons detect stimuli inside and outside the body.

Answer 32

peripheral nervous system

Question 33

responsible for bodily functions that work or happen involuntarily automatically without you thinking about them.

Answer 33

autonomic nervous system

Question 34

active under normal conditions like when you continue to breath while sleeping

Answer 34

parasympathetic division

Question 35

active under physical or emotional stress, emergency situations or whenever your body requires some actions

Answer 35

sympathetic division

Question 36

stimulate skeletal muscles under conscious control of body movements

Answer 36

somatic nervous system