Nervous System Flashcards
(35 cards)
What are the five sense organs?
Skin (integumental system), ears, nose, eyes, tongue
What are the five senses?
Touch, taste, smell, sight, hearing
What is found in the sense organs?
Receptors that relay information through neurones detecting stimulus
What is a neurone?
A nerve cell
What does CNS stand for
Central nervous system
What does PNS stand for
Peripheral nervous system
What two organs are part of the central nervous system?
The brain and spinal chord (has to be spinal chord not spine)
What is the peripheral nervous system?
The portion of the nervous system located outside of the brain and spinal chord
What is the role of the central nervous system?
To coordinate the nervous system
What two systems does the peripheral nervous system consist of?
Systematic and autonomic
What is the systematic nervous system?
The body
What is the autonomic nervous system ?
Automatic (how the heart beats ect, myogenic muscle)
List the main processes of the nervous system (from stimulus to effector)
Stimulus, receptor, central nervous system, effector
What is the iris reflex ?
The size of the pupil changing in bright or dim light
What are the stimulus’s in the iris reflex?
Decrease of light or increase of light
What is the receptor In the iris reflex?
Retina
What is the coordinator in the iris reflex?
Brain
What is the effector in the iris reflex?
Iris
Why does the pupil constrict in bright light?
To stop damage to the eyes in bright light
Why does the pupil dilate in dim light ?
To see better in dim light
What is the patella T reflex ?
A sudden kicking movement in the lower leg in response to forcefull stimulus
What is the stimulus in the patella T reflex ?
Exhorted force
What is the receptor in the patella T reflex ?
The muscle running along the thigh (quads)
What is the coordinator in the patella T reflex ?
Spinal chord
