This document summarizes the key human body systems involved in receiving and responding to stimuli. It describes the main senses of sight, smell, hearing, touch and taste and the organs associated with each. It then explains the nervous system, including the central nervous system made up of the brain and spinal cord, and the peripheral nervous system comprising sensory and motor nerves. It outlines the roles of the brain and spinal cord in voluntary and involuntary movements. Finally, it provides an overview of the skeletal system of bones and joints, and the muscular system of muscles, tendons and their functions.

1. SENSITIVITY
AND
COORDINATION
DOLORES GARCÍA

2. STIMULUS:
A stimulus
anything you see, hear,touch, smell
taste.
Can be:

Internal: come from
inside our bodies

External: come from
outside the body.
is
or

3. RESPONSES:
answer to a stimulus.
There are two types:

Muscular responses:
are the movements our
muscles

Glandular
responses: occur
when glands produce
substances in response
Is the body’s

4. The sense: SIGHT
The eye is the organ of sight. It’s made up of the
eyeball and protected by the esyerbrows, eyelids
and eyelashes.

5. The sense: SMELL
The nose is the orgarn of smell. The
receptors of smell are in the pituitary gland,
inside the nostrils.

6. The sense: HEARING
The ear is the organ of hearing. It has three
parts.

7. TOUCH
&
The Skin is the
organ of touch.
It’s made up of
three layers
TASTE
The tongue is the
organ of taste. The
receptors of taste
are in the taste
buds

8. THE
NERVOUS
SYSTEM: up of:
Is made
The Central Nervous
System


Interpret the information
Develop responses
The Peripheral
Nervous System :

Transmit the information

9. THE CENTRAL NERVOUS
SYSTEM
Has two parts


The BRAIN
Is inside the skull.
Is made up of the
–
–
–
Cerebrum
Cerebellum
Brain stem


The SPINAL CORD
Is protected by
vertebrae
Is made up of the
many neurons

10. VOLUNTARY AND
INVOLUNTARY MOVEMENTS
The BRAIN
produces response
in the case of
voluntary
movements
The SPINAL
CORD
produces response
in the case of
involuntary
movements

11. THE PERIPHERICAL NERVOUS
SYSTEM
Is made up of
SENSORY NERVES
Transmit information
MOTOR NERVES
Transmit responses

12. The SKELETAL
SYSTEM:

The SKELETON is
made up of all the
bones in the body.

The JOINTS are
located where two or
more bones meet.
Can be:
– Moveable joints
– Semi-moveable joints
– Fixed joints

13. The MUSCULAR
SYSTEM:

The
MUSCULATURE is
the set of muscles
in the body.

TENDONS are
made of flexible
and fibrous tissue.
They connect
muscles to bones.

14. THE END