Ms.Iracheta's Biology Class: Body Systems

Body Systems

The Human Body Brainpop

Integumentary System

Includes skin, hair, nails, oil and sweat glands

1st line of defense against foreign pathogens.

Oil glands in your skin produces acidic oils that stop fungi and bacteria from growing.

Finger nails and hair are made of a protein called KERATIN.

What are some functions of nails in humans, animails?

There are 3 layers of the skin are

Epidermis: outermost layer of the skin. 1st layer of protection

Dermis: contains glands and the cells that maintain the skin structure by producing elastin and collagen

Hypodermis: layer of subcutaneous fat which insulates muscles and internal organs from temperature changes.

Hair is a characteristic found in mammals.

Sweat glands help the body cool off.

Imbedded in your skin are arteries (carry blood away from your heart) and veins (carry blood to the heart).

There are millions of sensory receptors nerves in your skin that alert the brain of any movement.

The skin also is responsible for homeostasis

Image result for skin shedding on hands

Skin peeling after sun burn. Goosebumps?

Dnews: goosebumps used for money?

The Skin Brainpop Video

Skeletal and Muscular SystemThese two systems help with movement and supportSkeletal System: There are 206 bones in the adult human body, around 300 in newborns.They help with supporting the body's weight and movement.

Bones are made up of protein called collegan. They are very much alive.Numerous people with blood cancers such asleukemia, lymphoma, sickle cell anemia and other life-threatening diseases, rely on bone marrow or cord blood transplants to save their life.Red bone marrow produces red blood cells.Yellow bone marrow produces act as a store for fats and serves to provide sustenance
Marrow Transplant

Interactive BonesBones are connected neighboring bones by LigamentsBones connect to muscles by the use of Tendons

Skeletal System VideoBones SongMuscular SystemAll muscles are longer than they are wide they are made of muscle fibers.Muscle fibers: are muscle cells that contract, or shorten in response to the nervous system.

Three types of muscles:It acts as a involuntary muscle which we have no control of. Passing food from your throat to your stomach all the way down to your intestines uses involuntary muscles.Voluntary muscles aka skeletal muscles are moved consciously.
Skeletal muscle: moves bones has dark bands and is triangular. (voluntary)Cardiac muscle: muscle in the heart (involuntary)Smooth muscle: muscle in arteries and intestines.(involuntary)

Muscular System Video

A very famous muscle is...

The circulatory system is made up of the heart, blood, veins, and arteries.

It transports oxygenated blood to all cells and circulates back to the heart.

Arteries take blood Away from the heart.

Veins take blood To the heart.

How long does blood take to travel around the body?

Does the heart still beat out of the body?

Artificial Heart Video

Circulatory System BrainPop Video

Nervous System

Includes: Brain, Spinal Cord, and Peripheral Nerves

Your brain communicates with your body through cells called Neurons

The brain controls everything our body does; from movements of limbs to heart beats.

Nervous System

Neurons BrainPop Video

Brain on Drugs

Brain on Alcohol

Mouse Party

Brain Surgery Simulation