Body Systems

**VIDEO Digestive System

Digestive system What does it do? Digestion is the process by which food and drink are broken down into their smallest parts so the body can use them to build and nourish cells and to provide energy. Common problems/injuries? Heartburn (acid reflux), ulcers, gallstones, IBS, constipation, Crohn’s disease

Digestive System Mouth Pharynx Esophagus Stomach Small Intestine Large Intestine Rectum

**VIDEO Nervous System

Nervous system What does it do? Sensory neurons take information from the eyes, ears, nose, tongue, and skin to the brain. Motor neurons carry messages away from the brain and back to the rest of the body. Common problems/injuries? Brain tumors, cerebral palsy, epilepsy, concussions, meningitis, mental illnesses, migraines

Central Nervous System Peripheral Nervous System Nervous System The Nervous System is divided into 2 parts: Central Nervous System Peripheral Nervous System

Central Nervous System Cerebrum – 85% of the brain, controls thinking, long and short term memory. Cerebellum – located at the back of the brain, controls balance. Spinal Cord – connects neurons to the brain

Peripheral Nervous System Made up of hugh network of interconnecting neurons across the body. Cranial Nerve – effects motion and feeling in the face. It does not pass through the spinal cord.

**VIDEO ON GIRL Endocrine System

ENDOCRINE system ENDOCRINE = HORMONES What does it do? The endocrine system helps regulate and maintain various body functions making and releasing hormones. Common problems/injuries? Diabetes, thyroid disorders ENDOCRINE = HORMONES

Endocrine System Pituitary Gland “Master Gland”; controls all endocrine glands Hypothalamus Controls metabolism and homeostasis Thyroid Gland Regulates metabolism Parathyroid Gland Controls calcium in blood and bones Adrenal Gland Controls metabolism and stress responses Pinal Gland Regulates wake/sleep cycle Reproductive Glands Controls sex hormones Pancreas Aids in food digestion and controls blood sugar levels

**VIDEO Respiratory System

Respiratory system What does it do? To supply the blood with oxygen. We inhale oxygen and exhale carbon dioxide – this gas exchange is how we get the oxygen to the blood Common problems/injuries? Asthma, bronchitis, emphysema, pneumonia

Respiratory System Nasal Cavity is lined with… Cilia Filters the air Mucous Membranes Moistens the air Blood Capillaries Warms the air

Respiratory System A – Lungs B – Alveoli C – Nasal Cavity D – Mouth E – Trachea F – Diaphragm G – Epiglottis H – Bronchia I – Pharynx I G H

**VIDEO Circulatory System

Circulatory system What does it do? It circulates blood through the body. This is our “blood pressure,” which is the contraction and relaxation of our heart muscle. Systole = Contraction Diastole = Relaxation Normal Blood pressure is 120 / 80 Common problems/injuries? Atherosclerosis, high blood pressure, angina, aneurysm, arrythmia

Circulatory System atrium ventricle atrium ventricle blue lungs oxygen The heart is divided into 4 chambers, right ________________ and ____________________ and the left ______________________ and _________________________. Oxygen poor blood, ____________ blood, circulates to the right side of the heart, it is sent to the _______________ to get __________________. The _______ blood is then sent back to the left side of the heart to be circulated back through the _______________. atrium ventricle atrium ventricle blue lungs oxygen red body

**VIDEO Lymphatic System

LYMPHATIC = IMMUNE SYSTEM Lymphatic system What does it do? The lymphatic system transports fluids throughout the body. The vessels carry proteins to the lymph nodes, which are filled with white blood cells that kill bacteria and other pathogens, before sending the protein back into the body. Common problems/injuries? Lymphedemia, lymphoma, cancer LYMPHATIC = IMMUNE SYSTEM

all throughout our body, what is the largest one? We have lymph nodes all throughout our body, what is the largest one?