Presentation is loading. Please wait.

Presentation is loading. Please wait.

THE HUMAN BODY UNIT 3.

Similar presentations


Presentation on theme: "THE HUMAN BODY UNIT 3."— Presentation transcript:

1 THE HUMAN BODY UNIT 3

2 bones muscles joints short Long Flat ribs Voluntary biceps/triceps
THE LOCOMOTOR SYSTEM bones short Long Flat ribs muscles Voluntary biceps/triceps Involuntary joints Fixed Semi-flexible vertebrae Flexible elbow They protect internal organs and support the body. They move bones when they contract and relax. They join bones together and help make the skeleton flexible.

3 Short: provide support and stability. In our backs, hands and feet.
Flat: protect our internal organs. Our ribs. Long: are used for movement. In our arms and legs. BONES Fixed: do not move. Semi-flexible : allow a little movement. Flexible: allow a lot of movement. JOINTS Voluntary: are controlled by our brain. Involuntary: move automatically. MUSCLES

4 The skeleton maxilla mandible BONES patella
The skeleton is made up of all the bones and cartilage in our body. Bones are made of hard bone tissue. Cartilage is made of a more flexible tissue. maxilla mandible Short: provide support and stability. In our backs, hands and feet. Flat: protect our internal organs. Our ribs. Long: are used for movement. In our arms and legs. BONES patella

5 Joints Our bones are connected at joints. Flexible cartilage protects the end of these bones. Strong elastic bands of tissue called ligaments connect bones at a joint. Fixed: do not move. Semi-flexible : allow a little movement. Flexible: allow a lot of movement. JOINTS A fracture is a broken bone. A sprain is when we tear a ligament. A dislocation is when a bone is moved from its normal position in a joint.

6 Muscles Tendons tissues which connect muscles to bones.
There are over six hundred muscles in the human body. Muscles help to: Give our bodies shape. Move. Protect our internal organs. intercostals Muscles are made up of muscle fibres and the muscles in our body respond to the nervous system by contracting and relaxing Tendons tissues which connect muscles to bones. The musculoskeletal system is made up of bones, ligaments, muscles and tendons. Voluntary: are controlled by our brain. Involuntary: move automatically.

7 central nervous system Peripheral nervous system
The nervous system The nervous system receives and responds to information from the five sense organs. It controls the working of the internal organs and body systems, such as the circulatory and respiratory systems. It produces reflex actions that protect our bodies from danger. 1.- BRAIN The control centre Cerebrum: the biggest part and controls voluntary movements. Cerebellum: controls balancem movement and coordination. Brain stem: connects the brain to the spinal cord and controls involuntary movements. central nervous system 2.- SPINAL CORD: is made up of nerve tissue and runs from our brain down our spine. It controls reflex actions. Peripheral nervous system Our nerves are made up of nerve cells called neurons. They are connected by tiny branches.

8 The nervous system and the senses
Our sense organs detect information from the environment and neurons transmit this information to our brain. Sight Hearing Smell Taste Touch Can detect colour, shape and size. Can detect loud, soft, high and loud sounds. Can detect chemicals – pleasant or unpleasant - in the air. Can detect tastes – bitter, sweet, sour, salty Can detect temperature, texture, pressure and pain. Cornea Pupil iris lens retina Nerve receptors – Optic nerve eardrum three small bones cochlea auditory nerve nostrils Nerve receptors – Olfactory nerve taste bud epidermis dermis


Download ppt "THE HUMAN BODY UNIT 3."

Similar presentations


Ads by Google