Andrea Fernández Peñalver

6º de primaria

The three vital functionsThe human body and nutrition

NUTRITION

INTERACTION

REPRODUCTION

We need nutition our bodyes working.

There are four humans body system:

1. Digestive system

2. Respiratory system

3. Circulatory system

4. Excretory system

Human begins are able to control and coordinate their activities through the interaction function

EXTERNAL STIMULI Are changes that happen in

ourenviromentet ouside the body.

o A stimuli is any action of changein our enviroment that we can feel

INTERNAL STIMULI Are changes tht happen inside

our body

MOTOR RESPONSES Happen wen the muscles move

Example we streach our arms to catch the ball

GLANDULAR RESPONES Happend wen the organs called

glands produce a subtance.

Example when we feel too hot,our body sweats

Human begins recive informetion from our own body through five senses:SMELL,TASTE,TOUCH,SIGHT and EARING

Olftory receptors are in the nasal cavity netx to the pituotary area. The sense of smell are taste

THE SENSE OF SMELL

Taste rectors are i the tongue. They are smell bumps called buds

Difference between sweet,sour,bitter and salty flavours

The skin is the main organ of the sense of touch.

Touch receptors can detect temperature,pressure,pain and texture.

The eyes are the organ that gives us the sense of sight.

Light enters the eyes thought the pupul and lens and the retina and the optic nerve.

The retina sends stimuli to the brain thought the optic nerve.

The ears are the organ of the sense of hearing. The outer ear collects sounds.

This sound passes through the iner ara canal, the middle ear and the three small bones.

Then the sound reach the colchlea and the auditory nerve.

The auditory nerve sends signals to the brain

The nervous system has an importan role to perform in the interaction function.

SENSE ORGANSThey respond to a stimulus and send

Impulses along the sensory nerves.

SENSORY NERVESThey carry information from the sense

Organs and internal organs to the central

Nervous system

o It recives and interprets information response

o It is made up of the spainal cord and the brain

SPINAL CORD (The spinal cord produces fast

and automatic responses)

BRAIN (The brain is inside the cranium and it makes decision and gives orders)

It central nervous system cordinates the information recived and sends impulses along motor nerves

MUSCULOKESTAL SYSTEM

Motor nerves (it brings a response. This reponse

can be either a voluntary or an

involuntary responses

involuntary movements

voluntary movements

LIGAMENTS

Connect bones to each other

MUSCLES

Can stretch and contract. This helps the bones to move

BONES

The skeleton is made up f bones and gives shape to the human body. It protect the internal organs

TENDONS

Attach muscles to the bones

JOINTS

Our bones are connected to each other at the joints. Some joints can move, while other joints can´t move at all

FIXED

Can move. The bones in the cranium are connected by fixed joints

HINGE

A connection of two objects that enables one of them to move or swing a door

BALL AND SOCKET

A joints that can rotate. One piece is shaped like a ball. This goes inside another piece which is shapedlike a round cup.

PIVOT

A joint between bones that rotates around one poind.

GLIDING

A movement that is smooth and easy.