Biology test: NSMI Flashcards
Epithelial tissue
Tissue that covers the surface of the body and lines internal organs
Connective tissue
Tissue that holds organs in place and binds different parts of the body together
Nervous tissue
Tissue that receives messages from the body’s external and internal environment, analyzes the data, and directs the response
Muscle tissue
Tissue that controls the internal movement of materials in the body, as well as external movement
Homeostasis
Process by which organisms maintain a relatively stable internal environment
Feedback inhibition
The process in which the product or result stops or limits the process
Resting potential
Electrical charge across the cell membrane of a resting neuron
Action potential
Reversal of charges across the cell membrane of a neuron (nerve impulse)
Threshold
Minimum level of a stimulus required to activate a neuron
Synapse
The location at which a neuron can transfer an impulse to another cell
Neurotransmitter
A chemical used by a neuron to transmit an impulse across a synapse to another cell
Reflex
Quick automatic response to a stimulus
Sensory neuron
A neuron that reacts to a specific stimulus such as light or sound by sending impulses to other neurons and eventually to the central nervous system
Motor neuron
A neuron forming part of a pathway along which impulses pass from the brain or spinal cord to a muscle or gland
Interneuron
A neuron that transmits impulses between other neurons, especially as part of a reflex arc
