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Comparative

Anatomy

Presented by Maddy Horne, Kaitlyn Britton, and Shayla Britt

Function of the Skeletal System

Function of the skeletal system

The Skeletal System provides support, movement, protection, blood cell production, calcium storage and endocrine regulation.

Movement

Provides a framework for muscles to attach. When the muscles contract they pull on the bones of the skeleton, which then acts as a lever and creates movement.

movement

Support

Provides a framework to support the organs and the tissues of the body.

Support

Protection

It protects our internal organs. The skull protects the brain; the thorax (sternum,ribs,and spine) protects the heart, lungs and other viscera (organs within the thorax).

protection

Blood Cell Production

blood cell production

The skeleton is the site of haematopoiesis, the development of blood cells that takes place in the bone marrow. In children, haematopoiesis occurs primarily in the marrow of the long bones such as the femur and tibia. In adults, it occurs mainly in the pelvis, cranium, vertebrae, and sternum.

Calcium storage

The bones store calcium and phosphorus which are minerals that are released into the blood when needed.

calcium

storage

RAT

Rats have a:

Humerus Femur Vertebrae

Radius Tibia Cranium

Ulna Fibula Pelvis

Sternum Phalanges Ribs

RAT

Rat Pictures

Human Skeleton:

major bones

HUMAN

Cranium

Vertebra

Humerus

Patella

Ribs

Pelvis

Sternum

Phalanges

Radius

Ulna

Tarsal/Carpals

Femur

Tibia

Fibula

Clavicle

Scapula

Differences:

Similarities:

Similarities and Differences

Rats have less vertebrae than humans.

They also have a fewer number of phalanges including the lack of opposable thumbs.

Rats have tail bones while humans end at the coccyx.

Both rats and humans have a separated tibia and fibula.

They also have a separated radius and ulna.

Rats have shoulder joints and leg joints that are similar to humans.

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