unit 2 sensitivity and coordination ana and devorah s
TRANSCRIPT
SENSITIVITY AND COORDINATION
Ana Gazapo Mora
Deborah Diego Carbajosa
Stimuli
• Stimulus is anything you
see,hear,touch,smell or taste.
• Stimuli can be Internal or
External.
Internal Stimuli
External Stimuli
Receptors
• The body has different receptors : Internal and External
Responses
• Response is the body´s answer to a stimulus
• Responses can be Muscular or Glandular
Muscular Response
Glandular Response
Sight
The eye is the organ of sight. It is made up of the eyeball, eyelids and eyelashes.
SMELL
The nose is the organ of smell. The receptors of smell are in the pituitary gland, inside the nostrils.
Hearing
The ear is the organ of hearing it has three parts:
• The outer ear includes the ear and the ear canal
• The middle ear includes the small bones and the eardrum.
• The inner ear includes the cochlea and the auditory nerve
Touch & Taste
TOUCH
The skin is the organ of touch is made up of three layers.
TASTE
The tongue is the organ of taste the receptors of taste are in the taste buds.
What is the nervous system ?
THE NERVOUS SYSTEM
The nervous system is made up of nerve centres and nerves
NEURONS
• Both the central and the peripheral nervous systems are made up of specialised cells called neurons.
• They are made up of a cell body, dendrites and axons.
VOLUNTARY AND INVOLUNTARY MOVEMENTS
Our bodies react to stimuli making voluntary or involuntary movements
VOLUNTARY MOVEMENTS
• The brain produce a response in the case of voluntary movements.
INVOLUNTARY MOVEMENTS
• The spinal cord produces a response in the case of involuntary movements
THE SKELETAL AND THE MUSCULAR SYSTEM
THE SKELETON
• The skeleton is made of the bones in the body
• Head bones: there are two groups, skull bones
and facial bones.
• Trunk bones: there are two groups , the spine
and the rib cage.
• Limb bones: there are two groups, upper limb bones and lower limb bones.
JOINTS
The joints are located where two or more bones met.
There are two types of joints:
• Movable joints
• Semi-moveable joints
• Fixed joints
THE MUSCULATURE
It is the set of muscles in the body.
Head muscles : masseter, buccinator and orbicular.
Trunk muscles : sternoclaidomastoid, abdominal and pectoral
Limb muscles :biceps , triceps, deltoid, quadriceps, gluteus and calf muscles