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Chapter 33 :)
Vocabularies!!
| Question | Answer |
|---|---|
| are specialized cells that help you gather information about your environment, interpret the information, and react to it. | neurons |
| receive signals called impulses from other neurons and conduct the impulses to the cell body. | dendrites |
| is the nucleus of the neuron and many of the cell organelles are found. | cell body |
| carries the nerve impulse from the cell body to other neurons and muscles. | axon |
| is a nerve pathway that consists of a sensory neuron, inter neuron, and motor neuron. | reflex arc |
| is another name for a nerve impulse. | action potential |
| is the minimum stimulus to cause an action potential to be produced. | threshold |
| is the myelin sheath has many gaps. | nodes |
| is a small gap exists between the axon of one neuron and the dendrite of another neuron. | synapse |
| is a chemical that diffuses across a synapse and binds to receptors on the dendrite of a neighboring neuron. | neurotransmitter |
| is the brain and the spinal cord make up the... | central nervous system |
| consists of the sensory neurons and motor neurons that carry information to and from the CNS. | peripheral nervous system |
| is the largest part of the brain and is divided into two halves called the hemisphere. | cerebrum |
| relays signals between the brain and the spinal cord. | medulla oblongata |
| relays signals between the cerebrum and the cerebellum. | pons |
| regulates body temperature, thirst, appetite, and water balance. | hypothalamus |
| relay information from external sensory receptors to the central nervous system, and motor nerves relay information from the central nervous system and skeletal muscles. | somatic nervous system |
| carries impulses from the central nervous system tot eh heart and other internal organs. | autonomic nervous system |
| is most active times of emergency or stress when the heart rate and breathing rate increase. | sympathetic nervous system |
| is most active when body is relaxed. | parasympathetic nervous system |
| are areas of specialized chemical receptors on the tongue that detect the taste of sweet, sour, bitter, and salty. | taste buds |
| which inverts the image and projects it into the retina. | lens |
| contains numerous receptor cells called the rods and cones. | retina |
| are light-sensitive cells that are excited by low-levels of light. | rods |
| function in bright light and provide information about color to the brain. | cones |
| is filled with fluid and lined with tiny hair cells. | cochlea |
| transmit information about body position and balance to the brain. | semicircular canals |
| is a substance, natural or artificial, that alters the function of the body. | drug |
| is a neurotransmitter found in the brain that is involved with the control of body movements and other functions. | dopamine |
| are drugs that increase alertness and physical activity. | stimulants |
| are drugs that tend to slow down the central nervous system. | depressants |
| occurs when a person needs more and more of the same drug to get the same effect. | tolerance |
| is the psychological and/or physiological dependence on a drug. | addiction |
Created by:
elegaspi203
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