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3 body systems (Immune System: (Immune System are biological structures…
3 body systems
Immune System:
Immune System are biological structures and processes within an organism that protects against diseases by identifying and Kling pathogens and tumor cells.
- Skin - The dead, outer layer skin, known as the epidermis, forms a shield against invaders and secretes chemicals that kill potential invaders.
- cilia and mucus - As you breath in foreign particles and bacteria bump into mucus throughout your respiratory system and become stuck.
Cilia is hair-like structures. It sweep this mucus into the throat for coughing or swallowing.
- Saliva - saliva contains many chemicals that breakdown bacteria.
- Stomach Acid - swallowed bacteria are broken down by incredibly strong acid in the stomach that breakdown your food. The stomach must produce a coating of special mucus or the acid will eat your stomach.
- White blood cells - If invaders actually get within the body, then your white blood cell begin their attack.
- Phagocytes/macrophage - Responsible for eating foreign particles. The phagocytes breaks the foreign particles apart in organelles.
- T-cells - recognize infected human cells and cancer cells. It will attack infected cells and quickly kill them.
- Interferon - Chemical that interferes with the ability to viruses to attack other bodies cells.
Excretory System
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- Skin: sweats: Excrete H2O, urea, salts. Cools down the body.
- Large Intestine: The remains of food turn into solid wastes for elimination. The mucus is excreted.
- Liver: Turns nitrogen into urea. Breaks down poisonous substance to be removed from our body.
Nervous System:
The control and main communication system of the body. Its job is to send and receive messages as well as respond to changes In the environment.
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Cerebrum
Frontal lobe: concerned with reasoning, planning, parts of speech, movement, emotion, and problem solving.
Parietal Lobe: concerned with perception of stimuli such as touch, pressure, temperature, and pain.
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