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MEDICAL TERMINOLOGY
CHAPTER 5 TEST
Question | Answer |
---|---|
Autonomic Nervous System | The system that controls involuntary functions. |
Axons | Sends electrical impulses and transmits signals to other cells. |
Brainstem | The essential pathway that conducts impulses between the brain and the spinal cord. |
Cell Body | Houses all of the microscopic structures that keep the cell energized and functioning. |
Central Nervous System | Comprises the brain and the spinal cord. |
Cerebellum | Sometimes called the “little brain”; responsible for posture, balance, and coordination. |
Cerebrospinal Fluid | Continuously circulates and provides a cushion against injury from impact and sudden movement. |
Cerebrum | Makes up the largest portion of the brain; 4 lobes: frontal, parietal, temporal, occipital. |
Corpus Callosum | Divides the cerebrum into two hemispheres. |
Cortex | Deep folds and shallow grooves on the surface of the cerebrum which increase its surface area. |
Cranium | Hard bones of the skull that protect the brain. |
Dendrites | Receives information and bring this information to the cell body. |
Dermatomes | Areas of the skin that associated with specific spinal nerve roots. |
Glia | Support cells that carry nutrients to the neurons. |
Homeostasis | The state of dynamic equilibrium in the internal environment of the body. |
Meninges | Three membranes that protect the brain and spinal cord. |
Motor Impulses | Information from the brain that travels to the rest of the body. |
Motor Nerves | Nerves that control body movement. |
Myelin Sheath | Covers the axon in a special protective layer. |
Myotomes | Groups of muscles associated with specific spinal nerve roots. |
Neuron | A nerve cell. |
Parasympathetic Nervous System | The system that dominates during nonstressful times. |
Peripheral | Located outside of the CNS |
Peripheral Nervous System | The system that includes nerves in the arms and legs. |
Referred Pain | Pain that is felt at an area of the body away from the actual site of injury. |
Sensory Impulses | Information from the rest of the body that travels to the brain. |
Sensory Nerves | Gather information from the skin, the muscles, and the joints. |
Spinal Cord | The pathway for sensory impulses going to the brain and motor impulses coming from the brain. |
Sympathetic Nervous System | The system responsible for the physical changes of the fight-or flight response. |
Inferior | toward or nearer to the feet |
Posterior | toward or nearer to the back |
Anterior | toward or nearer to the front |
Pons | connects upper and lower part of the brain; serves as a message station; responsible for reflex actions. |
derm/o | skin |
my/o | muscle |