8. sight
The eye is the organ of sight.
it is made up of the eyeball and
protected by the eyebrows,eyelids
and eye lashes.
9. Process of sight
First light goes through the cornea.
Then light passes through the pupil,the
opening of the iris.
After that light passes through the lens
with focuses the image on the retina.
The information in the retina travels to
the brain through the optic nerve
10. smell
Thenose is the organ of smell.The
receptorsof smell are in the pituitary
gland,inside the nostrils.
11. hearing
The ear is the organ os hearing.
It has three parts:
The outer ear
The middle ear
The inner ear
12. The process of hearing
First the outer ear receives sounds
Then the middle ear changes sounds
into vibrations.
Finally the inner ear changes vibrations
into nerve impulses that go to the brain
13. touch
The skin is the organ of touch.
It is made up of three layers:
Epidermis
Dermis
Hypodermis
14. taste
The tongue is the organ of taste.
The receptors of taste are in the taste
buds.
There are taste buds all around the
tongue.
15. The nervous system
The nervous system is made up of
nerve centres and nerves.
16. The
peripheral nervous system is
made up of:
Sensory nerves
Motor nerves
The central nervous system has two
parts:
The brain
The spinal cord
17.
18. neurons
They are made up of a cell body,dendrites
and axons.
Neurons receive information from other
neurons.
20. Voluntary movements
When we see the clouds our sensory
nerves inform the brain about this.
Our brain processes the information and
produces a response.
Our motor nerves transmit a response to
the muscles.
21. Involuntary movements
The spinal cord produces a response in
the case of involuntary movements.
Sensory nerves transmit information about
involuntary movements to the spinal cord.
The spinal cord produces a very fast
response.
22. The skeletal system
Theskeletal and muscular system is in
charge of carrying muscular responses
created by the nervous system.it is
made up of the skeleton and the
musculature.
23. The skeleton
The skeleton is made up of all the bones
in the body.
Head bones:skull bones and facial bones.
Trunk bones:spine and rib cage.
Limb bones:there are two groups the upper
limb bones and the lower limb bones.
24.
25. joints
The joints are located where two or more
bones meet.Bones are connected by
ligaments.
There are three types of joints:
Moveable joints
Semi-moveable joints
Fixed joints
26.
27. The musculature
The musculature is the set of muscles in the
body.locomotor muscles are conected to the
bones.when they contract or relax,they move the
bones.
Head muscles:masseter,buccinator and orbicular.
Trunk muscles:sternocleidomastoid,abdominal,
pectoral,intercostal and trapezius.
Limb muscles:biceps,triceps,deltoid,quadriceps,
gluteus and calf muscles.
.