Human Body Flashcards
Skeletal System
made up of bones, ligaments, and cartilage. It supports the body and protects important organs
Muscular System
allows movement of body parts. It works with the skeletal system to help you move
Cardiovascular System
moves blood through the body. The heart is the pump for this system. Blood flows through blood vessels.
Respiratory system
gathers oxygen from the environment and gets rid of carbon dioxide from the body.
Lymphatic System
returns leaked fluid back to the blood. As a major part of the immune system, it has cells that help get rid of invading bacteria and viruses
Digestive system
breaks down food into nutrients that can be used by the body. The stomach breaks down food into tiny pieces. Nutrients are absorbed in the small intestine
Excretory system
gets rid of the body’s wastes.
Nervous System
made up of structures that control the actions and reactions of the body in response to stimuli from the environment
Endocrine System
controls body functions and helps maintain homeostasis using hormones
reproductive system
the body system that controls growth and metabolism and regulates reproduction through hormones
Immune System
the body’s defense system, which is made up of tissues and specialized white blood cells that recognize and attack foreign substances in the body
Homeostasis
the maintenance of a constant internal environment when outside conditions change
Arthritis
a disease that causes the joints to swell, stiffen, and become painful. It can also cause the joints to change shape
Osteoporosis
a disease that causes bone tissue to become thin. The bones become weak and break more easily
Muscular dystrophy
a hereditary disease that causes skeletal muscle to become weaker over time. It causes poor balance and difficulty walking or doing everyday activities
Tendinitis
when tendons become inflamed or even torn, it causes this painful condition which is treated with medication to reduce swelling
Atherosclerosis
hardening of the artery walls caused by the build-up of cholesterol and other lipids. It narrows the blood vessels and causes heart attacks.
Hypertension
abnormally high blood pressure, which can cause heart attacks and strokes
Heart Attacks
happens when an artery that supplies blood to the heart becomes blocked and the heart muscle tissue that depends on the blood supply does not get oxygen
Strokes
happens when a blood vessel in the brain becomes blocked or bursts
Asthma
a condition in which the airways are narrowed due to inflammation of the bronchi.
Pneumonia
an inflammation of the lungs that is usually caused by bacteria or viruses. The alveoli may fill with fluid, causing the person to suffocate
Emphysema
occurs when the alveoli have been damaged and oxygen cannot pass into the blood. It causes a buildup of carbon dioxide and is often the result of smoking
Muscular strains and tears
a muscle injury in which the muscle is overstretched and torn
Ligament
the tough, flexible stands of connective tissue that hold bones together
Fractures
a crack in a bone which usually repairs itself in six to eight weeks
Sprains
an injury to a ligament that is caused by stretching a joint too far
Joint
the place where two or more bones connect
Bone marrow
the soft tissue inside the bones where blood cells are produced
Smooth muscle
found in the internal organs and blood vessels. It helps move material through the body by contracting and relaxing
Cardiac muscle
the tissue that makes up the heart. It never gets tired and works automatically without you thinking about it
Skeletal muscle
attached to the bones, controlled by your brain
Strength
built with resistance exercise to increase the muscle’s power
Endurance
these exercises allow the muscles to contract for a longer time without getting tired
Flexibility
the full range of motion of a joint. This can be increased through stretching
Tendon
the tough strand of tissue that connects a muscle to a bone
Vein
a blood vessel that carries blood back to the heart
Blood
the fluid that carries gasses, nutrients, and wastes through the body
Artery
a blood vessel that carries blood away from the heart. They have thick walls with a layer of smooth muscle
Capillary
a tiny blood vessel that allows gas exchange between body cells and the blood.