Unit 2 sensitivity andcoordination   Maria boizas
Stimuli A  stimulus is anything you   see,hear,touch,smell or taste.  There are two types of stimuli:    Internalstimul...
The smell of a flower is an externalstimuli.
receptors Thereare two types of receptors:  Internal receptors  External receptors
Responses A   response is the body’s answer to a   stimulus  There are two different types of   responses:    Muscular ...
Chewing is a muscular response
The senses
sight The  eye is the organ of sight. it is made up of the eyeball and protected by the eyebrows,eyelids and eye lashes.
Process of sight  First light goes through the cornea.  Then light passes through the pupil,the   opening of the iris. ...
smell Thenose is the organ of smell.The receptorsof smell are in the pituitary gland,inside the nostrils.
hearing The  ear is the organ os hearing. It has three parts:   The outer ear   The middle ear   The inner ear
The process of hearing  First the outer ear receives sounds  Then the middle ear changes sounds   into vibrations.  Fin...
touch The   skin is the organ of touch. It is made up of three layers:    Epidermis    Dermis      Hypodermis
taste The tongue is the organ of taste. The receptors of taste are in the taste  buds. There are taste buds all around ...
The nervous system The nervous system is made up of  nerve centres and nerves.
 The    peripheral nervous system is made up of:   Sensory nerves   Motor nerves The central nervous system has two pa...
neurons They are made up of a cell body,dendrites  and axons. Neurons receive information from other  neurons.
Voluntary and involuntarymovements Ourbodies react to stimuli making voluntary or involuntary movements.
Voluntary movements  When  we see the clouds our sensory   nerves inform the brain about this.  Our brain processes the ...
Involuntary movements  The spinal cord produces a response in  the case of involuntary movements.    Sensory   nerves tr...
The skeletal system  Theskeletal and muscular system is in  charge of carrying muscular responses  created by the nervous...
The skeleton  The skeleton is made up of all the bones  in the body.    Head  bones:skull bones and facial bones.    Tr...
joints  The  joints are located where two or more   bones meet.Bones are connected by   ligaments.  There are three type...
The musculature    The musculature is the set of muscles in the     body.locomotor muscles are conected to the     bones....
The end
Sensitivity and coordination by María
Sensitivity and coordination by María
Sensitivity and coordination by María
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Sensitivity and coordination by María

  1. 1. Unit 2 sensitivity andcoordination Maria boizas
  2. 2. Stimuli A stimulus is anything you see,hear,touch,smell or taste.  There are two types of stimuli:  Internalstimuli  External stimuli
  3. 3. The smell of a flower is an externalstimuli.
  4. 4. receptors Thereare two types of receptors: Internal receptors External receptors
  5. 5. Responses A response is the body’s answer to a stimulus  There are two different types of responses:  Muscular responses  Glandular responses
  6. 6. Chewing is a muscular response
  7. 7. The senses
  8. 8. sight The eye is the organ of sight. it is made up of the eyeball and protected by the eyebrows,eyelids and eye lashes.
  9. 9. Process of sight  First light goes through the cornea.  Then light passes through the pupil,the opening of the iris.  After that light passes through the lens with focuses the image on the retina.  The information in the retina travels to the brain through the optic nerve
  10. 10. smell Thenose is the organ of smell.The receptorsof smell are in the pituitary gland,inside the nostrils.
  11. 11. hearing The ear is the organ os hearing. It has three parts:  The outer ear  The middle ear  The inner ear
  12. 12. The process of hearing  First the outer ear receives sounds  Then the middle ear changes sounds into vibrations.  Finally the inner ear changes vibrations into nerve impulses that go to the brain
  13. 13. touch The skin is the organ of touch. It is made up of three layers:  Epidermis  Dermis  Hypodermis
  14. 14. taste The tongue is the organ of taste. The receptors of taste are in the taste buds. There are taste buds all around the tongue.
  15. 15. The nervous system The nervous system is made up of nerve centres and nerves.
  16. 16.  The peripheral nervous system is made up of:  Sensory nerves  Motor nerves The central nervous system has two parts:  The brain  The spinal cord
  17. 17. neurons They are made up of a cell body,dendrites and axons. Neurons receive information from other neurons.
  18. 18. Voluntary and involuntarymovements Ourbodies react to stimuli making voluntary or involuntary movements.
  19. 19. Voluntary movements  When we see the clouds our sensory nerves inform the brain about this.  Our brain processes the information and produces a response.  Our motor nerves transmit a response to the muscles.
  20. 20. Involuntary movements  The spinal cord produces a response in the case of involuntary movements.  Sensory nerves transmit information about involuntary movements to the spinal cord.  The spinal cord produces a very fast response.
  21. 21. The skeletal system  Theskeletal and muscular system is in charge of carrying muscular responses created by the nervous system.it is made up of the skeleton and the musculature.
  22. 22. The skeleton  The skeleton is made up of all the bones in the body.  Head bones:skull bones and facial bones.  Trunk bones:spine and rib cage.  Limb bones:there are two groups the upper limb bones and the lower limb bones.
  23. 23. joints  The joints are located where two or more bones meet.Bones are connected by ligaments.  There are three types of joints:  Moveable joints  Semi-moveable joints  Fixed joints
  24. 24. The musculature  The musculature is the set of muscles in the body.locomotor muscles are conected to the bones.when they contract or relax,they move the bones.  Head muscles:masseter,buccinator and orbicular.  Trunk muscles:sternocleidomastoid,abdominal, pectoral,intercostal and trapezius.  Limb muscles:biceps,triceps,deltoid,quadriceps, gluteus and calf muscles. .
  25. 25. The end

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