Digestive system

Digestive System function

Breakdown food to turn into nutrients

Mouth

Chews and grind up food

Enzymes

Mouth uses to…soften the food

Saliva

Begins chemical breakdown

Esophagus

Connect mouth and stomach

Stomach

Secretes an extraordinary strong acids that leads to breakdown of food

Gastic juice

Acids that stomach secretes

Small intestine

Major absorption

Large intestine

Absorb ls left over nutrients

Liver

Metabolism, bile

Pancreas

Makes enzymes that will neutralize acids

Gall bladder

Stores bile

Insulin and buffer

Enzymes that pancreas makes

Insulin

Regulate blood sugar level

Buffer

Neutralize stomach acid

Rectum

Stores feces

Anus

The door of feces

Circulatory system

Pumps and circulate blood into the body

And delivers oxygen to different part of the body

Heart

Pumps blood

Arteries

Carries oxygenated blood away from the heart

Veins

Carry deoxygenated blood to the heart

Capillaries

Facilitates the exchange of gases, nutrients and waste between blood and tissue

Explain the circulatory system

Deoxygenated blood enters right atrium through superior and inferior vena cava.

Blood enters right ventricle through tricuspid valve.

Blood exits right ventricle through pulmonary valve and enters pulmonary artery.

Left and right pulmonary arteries send blood to lungs, where gas exchange occurs.

Oxygenated blood returns to heart via the pulmonary veins → enters left atrium

Blood enters left ventricle through mitral valve.

Blood exits left ventricle through aortic semilunar valve to enter aorta.

Aorta distributes blood to body.

Respiratory System

Exchange oxygen and carbon dioxide

Alveoli

Facilitates glass exchange

Diaphragm

Helps in breathing

Duodenum

Receives most of the digestive enzyme, and shortest

Jejunum

Absorbs most of the nutrients

Ileum

Absorbs remaining nutrients

Veins

Returns deoxygenated blood to the heart

Nervous system

Controls and coordinates bodily functions,sensesstimuli, and responds to the environment

Brain

Main organ inside the brain

Cerebrum

The largest and is the “boss” of the brain: it’s in charge of your Actions, Thoughts, memory, Voluntary Movements, Senses, Emotions, and Choices.

Cerebellum

Small but powerful; as it The “coach” of your body as it helps you move properly and is in charge of Balance, Coordination, and Posture

Brain stem

The “life-support machine” of your body, it keeps you alive as it connects the brain to the spinal cord,

it controls very important life functions: Breathing, Heartbeat, Blood pressure, Swallowing, & Digestion.

Spinal cord

- Relays messages between the brain and the body. Controls Reflexes.

Nerves

Transmit information throughout the body

Central Nervous system

The "Control System", consists of

the Brain and spinal cord

Peripheral Nervous system

All the nerves outside the brain and spinal cord

Somatic nervous system

Voluntary actions

Automatic Nervous system

Involuntary actions

Sympathetic Nervous System

Fight or flight

Parasympathetic Nervous System

Rest and digest

Mascular system

Controlsandcoordinates bodily functions,sensesstimuli, andresponds tothe environment

Skeletal muscle

Enable voluntary movement

Smooth muscle

Controls involuntary actions

Cardiac muscle

Pumps blood

Immune system

A complex network of organs, cells and proteins that defends the body against infection, whilst protecting the body's own cells

Antigen

Triggers the immune system to respond to foreign invaders

Antibody

Binds the specific antigen to neutralize them

Antibiotics

Kills or stop the growth of bacteria

Bone marrow

Found in the center of many bones

Hematopoietic

Produced by bone marrow and mother cells that gives rise to red blood cells

Red blood cells

Carry oxygen

White blood cell

Key immune system

Thymus

Trains and Matures T

Cells and they "learn" the difference between self and non-self

Lymph nodes

They filter lymph fluid for foreign particles. It houses B cells, T

cells, and macrophages; and hen pathogens are detected, immune cells multiply

and create an inflammatory response

Spleen

Filters blood and stores white blood cell

Lymph fluid

Collects excess fluid and returns it to the blood stream

Gland

Produces hormones

Hormones

Chemical messengers

Pituitary gland

“Master Gland”

Adrenal Gland

Paired organd located at the superior pole of the kidney