Unit 1 Lesson 2
Terms in this set (41)
System that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
Includes the salivary glands, mouth, esophagus, stomach, liver, gallbladder, pancreas, small intestine, colon, and rectum. Which food passes, nutrients are absorbed, and waste is eliminated.
the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
The bodily system that protects the body from foreign substances, cells, and tissues by producing the immune response and that includes especially the thymus, spleen, lymph nodes.
is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body.
comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or abrasion from outside. The integumentary system includes hair, scales, feathers, hooves, and nails.
Consists of skeletal muscles, tendons that connect muscles to bones, and ligaments that attach bones together to form joint. It permits movement of the body, maintains posture, and circulates blood throughout the body.
the network of nerve cells and fibers that transmits nerve impulses between parts of the body. Includes the brain, spinal cord, nerves, and sense organs and receives, interprets, and responds to stimuli from inside and outside the body.
Reproduce offspring- produce male sex cells (sperm) and female sex cells (oocytes). Includes the testes, penis, Fallopian tubes and uterus.
Body system consisting of the lungs and air passages; enables breathing, supplying the body with oxygen and eliminating carbon dioxide wastes.
Protects and supports body organs and provides a framework the muscles use to support movement. Made up of bones and joints
A collection of tissues that carry out a specialized function of the body
The nervous system
the network of nerve cells and fibers that transmits nerve impulses between parts of the body. It interacts with all the other systems.
Individual cells in the nervous system that receive, integrate, and transmit information.
detect stimuli and send signals to the brain and spinal cord.
neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
act on the signal by stimulating muscles to contract
Largest part of a typical neuron; contains the nucleus and much of the cytoplasm
a neuron's bushy, branching extensions that receive messages and conduct impulses toward the cell body
A threadlike extension of a neuron that carries nerve impulses away from the cell body.
It is the protective fat that increases the speed and protects the axon.
A globular protein that links into chains, two of which twist helically about each other, forming microfilaments in muscle and other contractile elements in cells.
A protein present in muscle fibers that aids in contraction and makes up the majority of muscle fiber
tissue composed of fibers that can contract, causing movement of an organ or part of the body
Basic contracting unit of muscle cell consits of actin and myosin filaments between z-lines in a muscle cell
any of the elongated contractile threads found in striated muscle cells.
long slender skeletal muscle cells
thin, flexible barrier around a cell; regulates what enters and leaves the cell
A jellylike fluid inside the cell in which the organelles are suspended
Structures specialized to perform distinct processes within a cell.
Small, simple, no nucleus, no membrane-bound organelles, single loop of DNA (nucleosome), no cellulose, cytoplasm, cell membrane, cell wall (made of carbs), somtimes have cilia or flagella (movement).
Cell with a nucleus (surrounded by its own membrane) and other internal organelles. Can have more than one cell.
A part of the cell containing DNA and RNA and responsible for growth and reproduction
A complex molecule containing the genetic information that makes up the chromosomes.
protein that detects a signal molecule and performs an action in response
Chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another
A complex molecule containing the genetic information that makes up the chromosomes. ATGC
A group of similar cells that perform the same function.
the process by which a cell becomes specialized for a specific structure or function.
process by which organisms maintain a relatively stable internal environment
A change in an organism's surroundings that causes the organism to react
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