Unit 2
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Transcript of Unit 2
UNIT 2
INTERACTION AND
THE BODY
BODY STRUCTURE
Cell Tissue
Organ system
Organ
Organism
RECEIVING INFORMATION
Our sense organs detect information from the environment and our sensory neurons transmit this information to our brain.
FIVE SENSES
SIGHTHEARING
TASTETOUCH
SMELL
SKINMOUTH
NOSE
EAREYE
SENSE ORGAN
SIGHTeyelid
pupil
lens
iris
Optic nerveBlind spot
retina
cornea
eyelash
HEARINGSemicircular canals
Auditory canaleardrum
Three small bones
cochlea
Auditory nerve
SMELL AND TASTENerve receptors
nostrils
Tongue
Taste buds
TOUCH
Dermis
Nerves
Blood vessels
PROCESSING INFORMATION
The nervous system receives information from the five sense organs, then analyses and interprets this information. It responds by sending messages which cause the body to react.
The nervous system is made up of millions of nerve cells called neurons. It is made up of two parts:
- the central nervous system and - the peripheral nervous system. Soma
Dendrites
Axon
Cell body: soma Prolongations: Dendrites and axon.
THE CENTRAL NERVOUS SYSTEM
THE PERIPHERAL NERVOUS SYSTEM
BrainSpinal cord
Nerves
Our brain sends signals to the muscles of the locomotor system to contract orelax.
GIVING A RESPONSE
IT IS MADE UP:SKELESTON: BONES
JOINTSMUSCLES
LOCOMOTOR SYSTEM MUSCULOSKELETAL SYSTEM
THE SKELETON
SternumVertebrae(spine)
UlnaRadio
Humerus
Femur
TibiaFibula
Skull
ClavicleScapula
Rib
Pelvis
Patella
Bones – Cartilage – Joint - Ligament
The skeleton is made up of bones and cartilage.Bones are made of hard bone tissue (short and wide, flat and thin, long and strong)Cartilage is made of a more flexible tissue.
MUSCLES
MORE ORGAN SYSTEMS Apart from those organ systems, humans
need more organ system to live:CIRCULATORY SYSTEMDIGESTIVE SYSTEMRESPIRATORY SYSTEMEXCRETOR SYSTEMRERODUCTIVE SYSTEM (MALE/FEMALE)
CIRCULATORY SYSTEMThe circulatory system moves blood through the hart and round the body in the arteries and veins. Blood gives our body nutrients and oxygen.The organs that form the circulatory system are: heart, arteries and veins.
DIGESTIVE SYSTEMThe digestive system is a group of organs that work together to help us digest food.The organs of the digestive system are: mouth, stomach and intestine.
RESPIRATORY SYSTEM
The respiratory system is a group of organs that work together to help us breathe.
We breathe in oxygen and breathe out carbon dioxide.
The organs of the respiratory system are: nose, mouth and lungs.
EXCRETOR SYSTEMThe excretory system is a group of organs that work together to eliminate useless products from cells.
The organs of the excretory system are: kidney, ureter and bladder.
RERODUCTIVE SYSTEM (MALE)
The reproductive system is necessary for every human being to produce children, but in order to continue our human species.There are two reproductive systems: male reproductive system and female reproductive system.The organs of the male reproductive system are: prostate and testis.
RERODUCTIVE SYSTEM (FEMALE)
The organs of the female reproductive system are: uterus and ovary.