1. How do we respond
to stimuli?
Natalia Pérez Chacón
Valeria A.Rodríguez Moreno
Ceip Alfares 6th grade

2. Nutrition
Humans ingest food and break in into
smaller particles so that it can reach all
the cells. The digestive system, the
circulatory system, the respiratory system
and the excretory system all participate in
the life process of nutrition.

3. Human percive and
respond to internal or
external stimuli using a
combination of their
sensory organs, nervous
system and
musculoskeletal system.
Interaction

4. Reproduction
This is the creation of new
organism with characteristics
similar to their parents.
Male sex cells (sperm) are
formed in the male
reproductive system and
female cells (ovules) are
formed in the female
reproduction system. They
unite and create a new
organism.

5. The parts of the nervous
system
The nervous system consists of the organs
and other structures that control and
coordinate all the actions involved in the
process of interaction.
The system perceives external and internal
stimuli . The nervous system’s reactions of
these stimuli are brain called responses.The
nervous system respond to stimuli thought
voluntary or involuntary actions.
Parts of the nervous system: The central
nervous system consists in four organs:
Brain,Cerebellum,Brainstem,Spinal cord.
The NERVES are distributed throughout the
body.

6. The senses
TOUCH:The skin is the taste sensory organ
that,covers and protests our body. It has
receptors that respond to stimuli. Such as
pressure temperature and pain.
TASTE: The sense of taste is located in the
tongue which has taste receptors that detect
the flavours: bitters, sour, sweet, salty and
umami.
SMEEL:The nose is the organ of smell. The
olfatory receptors perceive smells.
SIGTH: The sight consists of the perception of
images Through our eyes. The eyes are the
sensory organs of sight.
HEARING: Hearing occurs when ours ears
detect and process sound. The sensory
organs we used for hearing are ours ears.

7. The Musculoskeletal
system
The Musculoskeletal system allows us to move.
It has two elements:
The skeleton supports our bodies and gives them
shape.It consists of bones and joins.
The muscular system, which consists of muscles and
tendons.