Science: Medical Science

The Human Skeleton.

The Skeleton provides shape and support to our bodies. If we had no skeleton then we wouldn't be able to move and without it, our organs would squeeze, slip and slide onto each other.

 There are 206 bones in a skeleton.

 Cranium, which is also known as the skull. Its purpose is to protect the brain.

Mandible, also known as the jaw bone. It is the strongest bone and holds the bottom teeth in place

Clavicle, your collar bone

Scapula, the shoulder blade

Sternum, the breast bone

Humerus or funny bone is connected to the radius and ulna

Ribs, literally just called ribs. Its purpose is to protect the heart and the respiratory system

Pelvis, hip bone

Radius, forearm bone on the thumb side

Ulna, forearm one on the pinky side

Phalanges, bones of the fingers and toes

Femur, the thigh bone

Fibula,

Tibia, no

Muscles

The muscles function by making themselves shorter. This process is called Contraction

 The Tendons attach the muscles and bones together. When the muscle contracts, it pulls the muscle. Muscles can only push not pull.

 When your muscles aren't bending it is called Relaxing


Blood

The blood has a lot of functions. It carries oxygen from the lungs to your cells, carries carbon dioxide from your cells and lungs, carries hormones from the glands around your body, regulates the 
temperature by regulating heat around your body, and carries the nutrients from your digestive system to your cells.

The blood is made out of 4 elements: platelets, plasma, red blood cell, white blood cell.



Respiration

Aerobic = Involves oxygen
Oxygen+Glucose > Carbon Dioxide+Water+ 38 ATP(energy)
Anaerobic = Does not involve oxygen
Glucose >>>Lactic acid + 2 ATP(energy)