Biology 7.4
organ system
A group of organs that work together in performing vital body functions.
red blood cells
Blood cells that carry oxygen from the lungs to the body cells.
cell specialization
Cells throughout an organism can develop in different ways to perform different tasks
Multicellular organisms
Organisms composed of many cells (Ex. tissue, humans, etc.); depend on communication and cooperation among specialized cells;
unicellular organism
Organisms composed of only one cell (Ex. Bacteria); They grow, respond to the environment, transform energy, and reproduce. In terms of their numbers, unicellular organisms dominate life on Earth.
muscle cells
Shorten to cause movement of the body. They move the skeleton, heart, and internal organs
guard cells
The two cells that flank the stomatal pore and regulate the opening and closing of the pore.
Organs
Tissues are organized into:, group of tissues that work together to perform closely related functions; can be made up of several types of tissues that each have a specific task to make organ function
Tissues
groups of similar cells that perform a specific function in an organism; most animals have 4 types: muscle, epithelial, nervous and connective
function of pancreas cells
produces insulin that the body needs