Human Body

Level of Organization

Organs- 2 or more tissues working together for a function

Organ system- 2 or more organs working together for a function

Tissue- Similar cells working together

Organism- All the organs working together to main homeostasis

Cells -Basic unit of life

Skeletal system

Parts

Ligaments: connect bones to other bones

Cartilage- white, firm tissue (nose, ear)

Bones (spongy, compact)

Function: Support, Movement, Homeostasis, Makes blood, Storage

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Muscular: movement

Circulatory: makes red blood cells

Muscular system

Parts

Muscles, Tendons

Smooth: Involuntary: Found in digestive tract

Cardiac: Involuntary: Found in the heart

Tendon: Connects bone to muscle

Skeletal: Voluntary: Connected to bone

Function: Movement, maintain, posture, Stabilize joints, Generate Heat

Other systems: Skeletal, Circulatory, digestive, nervous

Circulatory system

Respitory system

Parts

Epiglottis: prevents food and drink from entering the windpipe

Nasal cavity; Filters the air that goes in the lungs

Trachea:carry oxygen-rich air to your lungs

Avioli: where the lungs and the blood exchange oxygen and carbon dioxide

Bronchi: distribute the air throughout the lungs

Lungs: the process of gas exchange

Bronchiolitis: cause coughing, often with mucus production

Pharynx: carries air, food and fluid down from the nose and mouth.

Diaphragm: contracts and flattens and the chest cavity enlarges

Larynx; breathing and creating vocal sounds

Other systems: nervous system, lymphatic system, and immune system

Function: allows us to breathe

Parts

Blood vessels: transport nutrients to organs/tissues

Blood: transporting oxygen and nutrients to the lungs and tissues.

Heart: pumping blood around your body as your heart beats.

Function: carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

Other systems: Respitory system

Endocrine system

Nervous system

Parts

Spinal cord: the pathway for messages sent by the brain to the body

Nerves: send electrical signals that help you feel sensations

Brain: controls every process that regulates our body.

Function: transmits signals between the brain and the rest of the body

Other systems: digestive and excretory systems

Parts

Adrenal glands : produce hormones that help regulate your essential functions

Testes: making sperm

Thyroid: plays a major role in the metabolism, growth and development of the human body

Ovaries: involved in the menstrual cycle, fertility, and pregnancy.

Pancreas: creates natural juices to break down foods.

Other systems:nervous system and the immune system

Function: release hormones into the bloodstream.

Digestive system

Parts

Pancreas: Moves food to the small intestine to break it down even more

Large intestine: Absorbs remaining water and transmits waste

Gall Bladder: Stores bile produced by the liver

Small intestine: Breaks down food into smaller parts

Liver: Filters blood

Stomach; Stores food

Mouth: Teeth in the mouth break down food

Rectum: Last section of the large intestine before reaching the anus

Other systems: Circulatory and Muscular

Function: Break down food and nutrients

Esophogas: Tube that travels food down your throat

Urinary/excretory system

Parts

Function: Filter waste and unneeded nutrients and water out of the blood

Other systems: Circulatory

Urine: Liquid waste filtered from blood

Kidneys: Liquid waste carried in the blood collects and forms urine

Bladder: Stores urine until eliminated

Ureters: Passes urine from kidney to bladder

Uretha: passes urine from inside your body to the outside

Immune system

Lines of defense

Function: Fighting against bacteria and viruses

Other systems circulatory and lymphatic

Second line: white blood cells, inflammatory response

Third line: antibodies

First line: Mucus, cilia, saliva, skin

Reproductive system

Other systems: nervous, endocrine, excretory, and circulatory systems.

Function: To produce egg and sperm cells

Parts

Ovaries: produce and store your eggs

Cervix: allows fluids to flow inside and out of your uterus.

Fallopian tubes: channels for oocyte transport and fertilization.

Uterus: to nourish the developing fetus prior to birth.

Vagina: channels period blood outside of your body, and plays a role in both pregnancy and childbirth.

Lymphatic

Parts

Function: Carries blood cells that fight diseases

Other system: Immune and circulatory

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Lymph nodes A small bean-shaped structure that is part of the body's immune system.

Contain WBCS: A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue.

Lymph vessels: A thin tube that carries lymph and white blood cells through the lymphatic system.