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5th Grade Human Body Systems
Transcript of 5th Grade Human Body Systems
Learning About the
Human Body Systems is
Going to be a Hoot
The Circulatory System
also known as
The Cardiovascular System
Major Function-sending (pumping) blood through the body, delivering oxygen and other nutrients to other cells throughout the body and removing waste that can be found in the blood such as carbon dioxide
The Digestive System
The Muscular System
The Nervous System
The Respiratory System
The Skeletal System
Major Organs- heart, blood vessels (arteries, veins, capillaries)
Major Function-responsible for breaking down (digesting) the food that we eat into smaller parts; helps move nutirents in order to nourish cells and provide energy.
Major Organs- mouth, esophagus, stomach, intestines,
Major Organs- muscles; smooth muscles, cardiac muscles, and skeletal muscles (We have both voluntary and involuntary muslces
Major Function-responsible for all of the movements of the human body; both voluntary and involuntary movements
Major Function-responsible for working as the control center of the body, monitoring conditions within and outside the body and sending out electrical signals to respond to them; it works with ALL other body systems
Major Function-responsible for bringing oxygen into your body, and removing the carbon dioxide from your body (
also known as gas exchange
); it is responsible for delivering oxygen to the circulatory system; It controls breathing.
Major Function- responsible for providing support for the body; the bones provide support for tissues and muscles; bones protect vital organs; must have for movement (because bones are attached to muscles); and Storage for minerals and immature blood cells; and
create red blood cells in bone marrow
Major Organs- brain,
spinal cord, nerves
Major Organs- nose, trachea, lungs
Major Organs- bones; there are 5 main classifications of bones: Long, Short, Flat, Irregular, and Sesamoid
The key to body Systems is that they must work together with the other systems to support life! But, how?
- a disease of the digestive system that causes inflammation, or swelling, and irritation of any part of the digestive tract
- is the inability to digest lactose properly, (a sugar found in milk and milk products.) This is caused by a deficiency of the enzyme lactase, which is produced by the cells lining the small intestine
Bronchitis- an inflammation of the membranes that line the bronchi or bronchioles. Bronchitis results from viral or bacterial infection or from irritating chemicals.
Pneumonia- a potentially serious condition of the lungs in which fluid and inflammation builds up in the alveoli, impeding (stopping/slowing) the flow of oxygen and carbon dioxide between the capillaries and the alveoli
Diseases/Conditions of the Digestive System
Diseases/Conditions of the Respiratory System
Diseases/Conditions of the Muscular System
Diseases/Conditions of the Skeletal System
Diseases/Conditions of the Nervous System
Diseases/Conditions of the Circulatory System
Concussions- The brain is made of soft tissue and is cushioned by spinal fluid. It is encased in the hard, protective skull. When a person gets a head injury, the brain can move around inside the skull and even bang against it. This can lead to bruising of the brain, tearing of blood vessels, and injury to the nerves. When this happens, a person can get a concussion — a temporary loss of normal brain function
Cerebral palsy (CP for short) is a disorder of the brain. Normally, the brain tells the rest of the body exactly what to do and when to do it. Because of how CP affects the brain, a person might not be able to walk, talk, eat, or move the way most people do. CP affects a person's ability to coordinate body movements. People with CP have trouble controlling their muscles.
Lou Gehrig's Disease (ALS)-Lou Gehrig's disease causes motor neurons in the brain and spinal cord to shrink and disappear, so that the muscles no longer receive signals to move. As a result, the muscles become smaller and weaker. Gradually the body becomes paralyzed, which means that the muscles no longer work.
Coronary artery disease
- The most common heart disorder in adults, coronary artery disease is caused by atherosclerosis. Deposits of fat, calcium, and dead cells, called atherosclerotic plaques, form on the inner walls of the coronary arteries (the blood vessels that supply the heart) and interfere with the smooth flow of blood.
- Strokes occur when the blood supply to the brain is cut off or when a blood vessel in the brain bursts and spills blood into an area of the brain, causing damage to brain cells
-Cardiac arrhythmias, also called dysrhythmias or rhythm disorders, are problems in the rhythm of the heartbeat. They may be caused by a congenital heart defect or they may be acquired later. An arrhythmia may cause the heart's rhythm to be irregular, abnormally fast, or abnormally slow
Spina bifida is a spinal defect that is present at birth. In spina bifida, the spinal cord does not form properly and the vertebrae and skin cannot form around it.
Osteoporosis is a disease resulting in the loss of bone tissue. In osteoporosis, the cancellous bone loses calcium, becomes thinner, and may disappear altogether.
Leukemia -The cause of most human leukemia is unknown. It is a kind of cancer of the blood or bone marrow (which produces blood cells) in which abnormal white blood cells multiply in an uncontrolled manner. They interfere with the production of normal white blood cells. Leukemia affects the production of red blood cells.
Muscular Dystrophy—a hereditary disease characterized by progressive wasting of the muscles. It makes muscle fibers abnormally susceptible to damage. Most types of muscular dystrophy are caused by the deficiency of a protein known as dystrophin.
Fibromyalgia results in widespread pain throughout every muscle in a person's body. Approximately 2% of the entire US population is affected by fibromyalgia. Symptoms of fibromyalgia include joint tenderness, fatigue problems, and sleep disturbances.
The respiratory system delivers oxygen
to the circulatory system.
The muscular system and skeletal system are responsible for working together, helping control the movement of the body.
The nervous system is responsible for telling your muscles (muscular system) how and when to move.
The digestive system is responsible for breaking down the foods we eat so that the circulatory system can transport the nutrients and other things throughout the body.
The circulatory (cardiovascular) system transports oxygen the muscular system which is needed for energy.
Muscles move by expanding or contracting. When the muscle contracts, this pulls the bones it's connected to closer together. (Think about how your arm bones get closer together...the muscles they are connected to contract)
Many of our muscles come in pairs. An example of this is the biceps and triceps in our arms. When the biceps contract the triceps will relax, this allows our arm to bend. When we want to straighten our arm back out, the biceps will relax and the triceps will contract. Muscle pairs allow us to move back and forth.
The largest bone is the pelvis, or hip bone. In fact it is made of six bones joined firmly together.
- The longest bone is the 'femur', in the thigh. It makes up almost one quarter of the body's total height.
- The smallest bone is the 'stirrup', deep in the ear. It is hardly larger than a grain of rice.
- The ears and end of the nose do not have bones inside them. Their inner supports are cartilage or 'gristle', which is lighter and more flexible than bone. This is why the nose and ears can be bent.
- After death, cartilage rots faster than bone. This is why the skulls of skeletons have no nose or ears.
- Unlike other body cells, brain cells can not regenerate. Once brain cells are damaged they are not replaced.
- The brain and spinal cord are surrounded and protected by cerebrospinal fluid.
Working towards being healthy means you have to pay attention to the foods you eat, and
how different activities can
damage/ affect these body
systems. Fitness is
important in helping different body systems work correctly.
rteries are usually
colored red and carry blood
WAY from the heart.
Veins are usually
colored blue in pictures and carry blood back TO the heart.
-There are over 650 muscles in the human body
-Shivering is caused by hundreds of muscles expanding and contracting to produce heat and make us warmer.
-The strongest muscle is in our jaw and is used for chewing.
- There are about 60 muscles in the face. Smiling is easier than frowning. It takes 20 muscles to smile and over 40 to frown. All the more reason to smile instead of frown! :)
- The longest muscle in the body is the sartorius, from the outside of the hip, down and across to the inside of the knee. It rotates the thigh outwards and bends the knee.
- The smallest muscle in the body is the stapedius, deep in the ear. It is only 5mm long and thinner than cotton thread. It is involved in hearing.
- The biggest muscle in the body is the gluteus maximus, in the buttock. It pulls the leg backwards powerfully for walking, running and climbing steps.
Capillaries move blood back and forth
between veins and arteries.