sciences ( DLP ) F3

what is the function of the human

nervous system?

• detects stimuli

• deoxygenetad blood

• interprets impules

central nervous system

• BRAIN

• SPINAL CORD

• SPINAL NERVES

• CRANIUM NRVES

PERIPHERAL NERVOUS SYSTEM

• SPINAL CORD

• CRANIUM NERVES

• BRAIN

• SPINAL NERVES

Voluntary Actions

• contolled by the

  stimuli

• reflex action

• controlled by the brain

• medulla oblongata

Involuntary actions

• reflex action

• medulla oblongata/

  spinal cord

• contolled by brain

The Brain Sends The nerve impules to....

• effector

• stimuli

• responses

• affector

The Affector [ receptors in the skins ] sends to...

• stimulus

• brain

• spinal cord

• effector

PARTS OF HUMAN EYES AND THEIR FUCNTION

IRIS IS TO CONTOL?

• the quantity of light entering the eyes

• contol the size of the pupil

• the focuses light onto retina

• the thickness of eye lens

Why can flu cause us to lose our senses of smell?

• nose are covered with snots

• nose are covered with mucus

state 2 damages to the ears which an cause deafness

• auditory nerves

• ossicles

• ear drum

• cochlea