Read Contractual Obligations

Muscle System List several ways the muscular

system assist you in your everyday life.

How many muscle does a human have?

Identify 3 types of muscle and where

can they be found? Where can you find your busiest

muscles? Explain how a muscle works.

Assess your body and explain why your muscles play a vital role in

helping you to maintain homeostasis?

Skeletal System An organ system of humans that

is found internally

(endoskeleton) that is made

up of individual bones and

fused bones

Skeletal SystemFunctions

Movement of the entire body or body parts from one place to another

1. Locomotion

2. Provides protection for internal organs

Organs such as the heart, lungs and brain

3. Provides our body with shape (form and structure) and support

4. Site (place) for red blood cell production

5. Stores minerals

Such as calcium and phosphorus

Bone Facts

As adults we have 206 bones

We are born with more than 300

Bones are rigid organs that form part of the endoskeleton of some organisms

Skeletal System An organ system of humans that

is found internally

(endoskeleton) that is made

up of individual bones and

fused bones

1. Compact bonehardest part that

gives bone strength that contains cells, calcium & phosphorus

Parts of bone

2. Marrow flexible tissue found in the hollow interior of bones that produces red blood cells

3. Periosteum is the tough outer membrane

4. Spongy bone found at the ends of long bones for added strength

5. Canals passageways that bring food & oxygen to bone cells, contains nerves

Cartilage

• Is flexible bone• Is a form of

connective tissue• Is a slippery

material•3x more slippery

than ice•Makes for easy

movement of bones

•Skeleton of newborn made mostly of cartilage

•Found at ends of bones

•For protection /Shock absorber

•Found in between vertebrae (cushioning)

•Creates shape of certain body parts

Joint Any place in the skeletal system that two or more bones meet

A. Immovable joint

called a fixed joint because no movement occurs there

TYPES:

Found in the skull/cranium

B. Pivot joint when there is a rotation of one bone around another

Found in the neck

C. Ball-and-socket joint

Found in the shoulder and the hip

When one bone fits into another creating a circular motion

D. Hinge joint when the two bones creates a back and forth direction only

E. Gliding joints when bones slide along each other

Found in wrist and ankle and vertebrae

Parts of the Human Skeleton

1.Cranium Skull

Protects the brain

Your face has 14 bones

2. Clavicle collar bone

3. Rib cage

4. Sternum breast bone

5. Vertebrae backbones

Humans have 33Humans and giraffes

have the same number of bones in their necks. Giraffe neck vertebrae are just much, much longer!

6. Humerus upper arm

bone7. Ulna & radius

lower arm

8. Pelvis hip bone

9. Femur thigh bone

longest & strongest

10. Patella knee cap

Babies are bornwithout the patella

(knee bone) it develops between

ages 2 and 5.

11. Carpals wrist bones12. Metacarpals hand bones

13. Phalanges

fingers & toes

One fourth of your

bones are located in your feet

The only bone not broken so far during any ski accident is one located

in your inner ear.

If you break your wrist as an adult it will take you 8 weeks to

heal. A five year old child who

breaks their wrist only takes 3 weeks to heal.

Bonemarrow

2 types:1. Yellow

marrow made of fat cells

2. Red marrow produces blood cells

People are born with only red bone marrow. As a person matures, the red marrow in many of the bones is replaced by yellow marrow. By adulthood, only about half of the bone marrow is red. Red bone marrow is found mostly in the ribs, breastbone, shoulder blades, collar bones, hip bones, skull, and spine.

Parts oftheSkeletalsystem

1. Bones2. Ligaments3. Tendons4. Cartilage

Ligaments

Connective tissue that connects bone to bone

Tendons Connective tissue that connects muscle to bone

Arthritis •Swelling of the joints

•Causes pain, stiffness

Scoliosis