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53 Cards in this Set
- Front
- Back
2 types of muscles found in the body
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involuntary and voluntary
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acne
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a bacterial infection of the skin in which the oil glands become blocked and swollen
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ball-and-socket joint
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ball-and-socket joints allow the greatest range of motion. Your shoulder is an example of a ball-and-socket joint.
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canal
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center, contains marrow
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cancer
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a disease in which some body cells grow and divide uncontrollably, damaging the parts of the body around them
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cardiac muscle
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Muscle tissue found only in the heart.
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cartilage
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A connective tissue that is more flexible than bone and that gives support to some parts of the body.
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cell
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the basic unit of a living thing
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cell membrane
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the outside boundary of a cell; controls which substances can enter and leave the cell
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compact bone
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outer laayer, solid, tough
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connective tissue
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a body tissue that provides support for the body and controls all of its parts
EX: blood, bone and cartilage |
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cytoplasm
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the region of the cell located inside the cell membrane or between the cell membrane and the nucleus; contains a gel-like material and cell organelles
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dermis
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the lower layer of the skin
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epidermis
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The outermost layer of the skin.
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epithelial tissue
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a body tissue that covers the surfaces of the body, inside and out
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follicle
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Structure in the dermis of the skin from which a strand of hair grows.
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functions of the skin
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1) covers and protects the body from injury, infection and water loss
2) helps regulate body temperature 3) eliminates waste 4)produces vitamin D 5) gathers info from the environment (through the nerves) |
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gliding joint
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1 bone slides over the other, wrist + ankles
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hinge joint
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allows extensive foward or backward motion EX:(elbow and knee)
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homeostasis
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the process by which an organism's internal environment is kept stable in spite of changes in the external environment
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How can you keep your bones strong+healthy?
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You can keep your bones strong+healthy by a combination of a balanced diet,regular exercise can start you on your way to a lifetime of healthy bones.
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involuntary muscle
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A muscle that is not under conscious control.
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joint and types
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a place where 2 bones come together; movable and immovables
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levels of organization in a body
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1) cells
2) tissues 3) organs 4) organ systems |
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ligament
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strong connective tissue that holds together the bones in a movable joint
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marrow
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The soft tissue that fills the internal spaces in the bone.
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melanin
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A pigment that gives the skin its color.
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nerve tissue
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a body tissue that carries messages back and forth between the brain and every other part of the body
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nucleus
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the control center of the cell that directs the cell's activities; contains the chemical instructions that directs all the cell's activities and determine the cell's characteristics
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organ
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a structure in the body that is composed of different kinds of tissue
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organ system
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a group of organs that work together to perform a major function in the body
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osteoporosis
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a condition in which the body's bones become weak and break easily
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pivot joint
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one bone rotates around the other , neck
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pivot joint
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the pivot joint allows one bone to rotate around another
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pore
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An opening through which sweat reaches the surface of the skin.
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pores
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an opening through which sweat reaches the surface of the skin
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red marrow
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blood formation
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skeletal muscle
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A muscle that is attached to the bones of the skeleton.
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smooth muscle
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an involuntary muscle that is found inside many internal organs of the body
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spongy bone
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outer sides, light but strong, pores
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stress
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the reaction of a person's body and mind to threatening, challenging, or disturbing events
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structure of the skin
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skin is organized into 2 layes:
- dermis - inner layer -epidermis - outer layer |
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tendon
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Strong connective tissue that attaches a muscle to a bone.
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vertebrae
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The 26 small bones that make up the backbone.
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voluntary muscle
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a muscle that you can control
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what are characteristics of bones
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- undergo growth and development - bone tissue continues to grow even after you stop growing
-bones have compact sections and spomgy sections -bones are both strong yet lightweight - bones are alive - they have blood and nerves |
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What are the five functions of the skeleton?
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1 provides shape and support.2 enables you to move.3 protects your internal organs.4 produces blood cells.5 and stores certain materials untill your body needs them.
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what are the three types of muscle tissue
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skeletal, smooth, and cardiac
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What do movable joints allow you to do?
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Movable joints allow you to make a wide range of movements
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What happens to cartilage as you grow?
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the cartilage is replaced by bone
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why do sckeletal muscles work in pairs
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b/c muscles can only contract and shorten, so they always have to work in pairs
ex - biceps and triceps work in pair (as biceps contracts, tricep relaxes) |
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yellow marrow
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storage site for fat
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3 types of muscle tissue
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skeletal muscle
smooth muscle cardiac muscle - some are voluntary and some are involuntary |