unit 1 the human body and interaction
TRANSCRIPT
THE HUMAN BODY AND INTERACTION
Alberto Serna Ramírez 6º de Primaria
Unit 1
THE THREE VITAL FUNCTIONS
3 VITAL FUNCTIONS :
NUTRITION INTERACTION REPRODUCTION
EXAMPLES OF NUTRITION
EXAMPLES OF INTERACTION
EXAMPLES OF REPRODUCTION
THE FIVE SYSTEMS THE
DISGESTIVE SYSTEM
THE RESPIRATORY
SYSTEM
THE CIRCULATORY
SYSTEM
THE EXCRETORY
SYSTEM
THE NERVOUS SYSTEM
THE DIGESTIVE SYSTEM The digestive system breaks down the food we eat into
smaller molecules that our body can absorb. The stomach and the intestines are organs of digestive system.
THE RESPIRATORY SYSTEM The respiratory system absorbs oxygen into the
body and releases carbon dioxide. The lungs and the trachea are organs of the respiratory system.
THE CIRCULATORY SYSTEM The circulatory system transports blood all over
the body. The heart is an organ of the circulatory system.
THE EXCRETORY SYSTEM The excretory system eliminates the waste our
body produces. The kidneys are organs of the excretory system.
HEALTHY HABITS EAT A
BALANCED DIET
DO EXERCISE
HAVE A GOOD POSTURE
SPEND TIME WITH YOUR
FRIENDS
KEEP CLEAN WITH GOOD
HYGIENE
THE INTERACTION FUNCTION
TYPES OF STIMULI
EXTERNAL STIMULI
INTERNAL STIMULI
THE INTERACTION FUNCTIONS
EXTERNAL STIMULI Outside the body . Our sense
organs capture these stimuli and send a message to the brain. Example: I´m cold.
INTERNAL STIMULI Inside the body. Receptor
organs inside our body receive these stimuli. The stomach is a receptive organ because it takes in food. Example : I´m hungry.
TYPES OF RESPONSE MOTOR RESPONSE
Happen when the muscles move. For example, we stretch our arms to catch the ball.
GLANDULAR RESPONSE Glands produce a substance.
For example, when we feel too hot, our body sweats. Sweat glands produce sweat.
THE SENSORY SYSTEM
THE FIVE SENSES
SMELL
TASTE
TOUCHSIGHT
HEARING
THE SENSE OF SMELL
Olfactory receptors are in the nasal cavity next to the pituitary area. The sense of smell needs the sense of taste in order to work properly.
THE SENSE OF TASTE
Taste receptors are on the tongue. They are small bumps called taste buds. Taste buds help us taste the difference between sweet, sour, bitter and salty flavours.
THE SENSE OF TOUCH
The skin is the main organ of the sense of touch. Touch receptors can detect temperature, pressure, pain and texture.
THE SENSE OF SIGHT
The eyes are the organ that give us the sense of sight. Light enters the eyes through the pupil, the lens and the retina. The retina sends stimuli to the brain through the optic nerve.
THE SENSE OF HEARING
The ears are the organ of the sense of hearing. The outer ear collects sounds. This sounds passes through the inner ear canal, the middle ear and the three small bones. Then the sounds reach the cochlea and the auditory nerve. The auditory nerve sends signals to the brain.
THE NERVOUS SYSTEMIt controls our entire body: 1. SENDING 2. RECEIVING 3. INTERPRETING From all the parts of our body.
THE NERVOUS SYSTEM
SENSE ORGANS
SENSORY NERVES
CENTRAL NERVOUS SYSTEM
THE CENTRAL NERVOUS SYSTEM
SPINAL CORD: INVOLUNTARY MOVEMENTS
BRAIN : IT MAKES
DECISIONS
MOTOR NERVES: COORDINATES THE
INFORMATION RECEIVED AND SENDS
SIGNALS TO THE MUSCLES.
MUSCULOSKELETAL SYSTEM
THE MUSCULOSKELETAL
SYSTEM
INVOLUNTARY MOVEMENTS: OUR
REFLEXES
VOLUNTARY MOVEMENTS :
PRODUCED BY BRAIN
THE BRAIN
THE BRAIN HAS 3 PARTS:
CEREBRUM : VOLUNTARY RESPONSE
CEREBELLUM : CONTROLS
BALANCE AND COORDINATION
THE BRAIN STEM : CONTROLS THE
ORGAN FUNCTION: HAERTBEAT
THE MUSCULOSKELETAL SYSTEM
MUSCULOSKELETAL SYSTEM:
IS MADE UP OF :
MUSCLES: CAN STRETCH AND CONTRACT.
BONES: IT PROTECTS THE INTERNAL
ORGANS.
LIGAMENTS: CONNECT BONES TO
EACH OTHER.
TENDONS: ATTACH MUSCLES TO THE
BONES.