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26 Cards in this Set

  • Front
  • Back
A pair of endocrine glands above kidneys. They secrete the hormones epinerione (adrenaline), and norepinephrine, (norepinephrine) which helps arouse body in times of stress
Adrenal Glands
Chemical messengers, made by endocrine glands, produced in 1 tissue and affect another
The body's slow chemical communication system; a set of glands that secrete hormones into the bloodstream
Endocrine system
Messages pass to other neurons or to muscles or glands
Branching extensions of a neuron that recieve messages and conduct impulses toward the cell body
Interconnected neural cells. They learn, as feedback strengthens or inhibits connections that produce certain results.
Neural networks
A simple, automatic inborn response to a senory stimulus, such as the knee-jerk response
Under the infulence of the hypothalamus, this gland regulates growth and controls other endocrine glands
Pituitary gland
The division of the automatic nervous system that clams the body, conserving its energy
Parasympathetic nervous system
The division of the automatic nervous system that arouses the body, mobilizing its energy in stressful situations
Sympathetic Nerbous System
The division of the peripherial nervous system that controls the body's skeletal muscles
Somatic Nervous System
Neurons that carry outgoing information from CNS to the muscles and glands
Motor Neurons
CNS neurons that internally communicate and intervene between the sensory imputs and motor outputs
Neurons that carry incoming information from the sense receptiors into the CNS
Sensory Neurons
The part of the peripheral nervous system that controls the glands and the muscles of the internal organs. Sympathetic division arouses; it's parasympathetic division calms.
Autonmic Nervous System
Neural "cables" containing axons. They connect the central nervous system with muscles, glands, and sense organs
Layer of fatty tissue that encases the Fibers of neurons; enables greater transmission speed of neural impulses as the impulse hops from 1 node to the next
Myelin Sheath
The sensory and motor neurons that connect the central nervous system to the rest of the body
Peripheral Neverous System
The brian and spinal cord
Central nervous system
The body's speedy electrochemical communication system consisting of all the nerve cells of the peripheral and central nervous systems
Nervous System
"Morphine within" natural, opiatelike neurotransmitters linked to pain control and to pleasure
A neurotransmitter that triggers muscle contraction
Messengers tat transverse the synaptic gap between neurons. When released, they travel across the synapse and bind to receptor sites on neuron, influencing whether that neuron will generate a neural impulse
Junction between the axon tip of the sending neuron and the dendrite or cell body of the recieving neuron. the tiny gap here is called synaptic gap or cleft
Level of stimulation required to trigger a neural impulse
Neural impulse, byh and charged atoms in and out of channels in the axon's membrane.
Action Potential