SKEKETAL SYSTEM cjsj

An adult human has how many bones?

The functions of the skeletal system include: providing a ​ (a)   to support muscles, fat, and skin; providing ​ (b)   by surrounding organs; providing ​ (c)   for movement; providing ​ (d)   for the body's minerals; and ​ (e)   .

• framework
• protection
• joints
• storage
• blood cell formation

There are two classifications of bone tissue: ​ (a)   bone which is spongy, porous, and made of trabeculae; and compact or ​ (b)   bone which is the harder, outer portion of bone made of osteons.

• cancellous
• cortical

Match the following types of bone cells.

• mature bone cells that are surrounded by the bone matrix

• Osteocytes

• Cleaners, that dissolve bony matrix.

• Osteoblasts

• immature cells which build the bone matrix

• Osteoclasts

Bones vary in size and shape depending on their location in the body.

• True

• False

Match the following types of bones with the correct examples.

• patella

• Irregular bones

• carpals and tarsals

• Short bones

• femur, humerus, ulna, radius, tibia, fibula

• Long bones

• Frontal bone, parietal bone, occipital bone, sternum, ribs, ilium of the pelvis

• Sesamoid bones

• vertebral bones, facial bones

• Flat bones

Bones of the arms, legs. shoulder and pelvic girdle make up the :

• Boney thorax

• irregular bones

• axial skeleton

• appendicular skeleton

Bones of the skull spine and rib cage make up the :

• Boney thorax

• pelvic girdle

• axial skeleton

• appendicular skeleton

(Builder)

    Produce new bone

    Produce new bony matrix

    Promotes deposition of calcium salts (They can pull excess calcium)

• osteocytes

• osteoblasts

• foramen

• sutures

Tags

NGSS.MS-LS1-5

. (Cleaner)

    Giant cells,

    Cleaners

    Secrete acids and enzymes dissolve bony matrix

    Release stored minerals

    Helps regulate calcium and phosphate in your body

• osteocytes

• osteoblasts

• osteoclasts

• sutures

Tags

NGSS.MS-LS1-3