Systems of the Body. THE NERVOUS SYSTEM FUNCTION: The nervous system controls & coordinates everything in the body. This includes all movement and all of the activities of the organs & organ systems. MAJOR PARTS OF THE NERVOUS SYSTEM
The nervous system controls & coordinates everything in the body. This includes all movement and all of the activities of the organs & organ systems.
The circulatory system & respiratory system work together to supply cells with the oxygen and nutrients they need to stay alive.
The Main Parts:
1. The heart
Heart Arteries Capillaries Veins back to heart
Diagram the Flow of Blood:
The basic function of the human respiratory system is the exchange of oxygen& carbon dioxidebetween the blood, air and tissues. In addition, air entering the respiratory system is warmed, moistened & cleanedbefore it enters the lungs.
1. Gas exchange: Oxygen diffuses into the blood & carbon dioxide diffuses from the blood out into the lung
Flow of air through the body:
Nose Trachea Bronchi Bronchioles
Alveoli of the lungs
A Nose J Diaphragm
I Bronchioles C Pharynx
F Trachea H Bronchus
E Larynx D Epiglottis
B Mouth G Lungs
together sperm and fluid make up semen.
FEMALE REPRODUCTIVE SYSTEM
- baby is born through this passageway and
sperm are deposited here
cervix: small opening at the bottom of the uterus which leads into the vagina. Opens when a baby is born. Otherwise small so menstrual blood can exit the body.
1. Skeletal: Attaches to bone & allows for movement
2. Smooth: Found in the walls of the stomach, intestines
& blood vessels. Helps materials move through these
3. Cardiac: Makes the heart
beat to send blood to the
Ex: Bicep contracts & tricep relaxes arm bends
Bicep relaxes & tricep contracts arm straightens
- supports the body
- protects the organs
- allows the body to move
- makes blood cells
1. Compact: Layer of hard bone that covers all bone
2. Spongy: Surrounded by the compact bone, it has many holes & spaces in it. Makes bones lighter.
3. Bone marrow: Soft tissue inside of bones makes blood cells
A joint is where 2 or more bones meet & allow for movement
Tough & flexible cartilage might cover the ends of a bone to allow for smooth movement between bones
The digestive system converts food into simpler molecules that can be used by the cells of the body.
The Parts of the Digestive System:
1. Key organs
undigested food material. Also called
Wall of small
The basic function of the human excretory system is the removal of waste from the cells and body. The skin excretes excess water and salts in the form of sweat. The lungs excrete carbon dioxide. The kidneys play a major role in excretion and remove waste products from the blood, maintain blood pH and regulate the water content of the blood and, therefore homeostasis.
Urea = Nitrogen containing waste made by the body
Dialysis = Blood is removed from the body, cleaned by a machine & then returned to the body
UREA REMOVAL FROM THE BODY:
Kidneys UreterBladderUrethra released from body
D urethra A kidney
B ureter C urinary bladder