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Chapter 8

The Nervous System 8.2

TermDefinition
Meninges A protective membrane that covers the brain and spinal cord. Composed of the dura mater, arachnoid mater, and pia mater.
Duramater A tough white connective tissue.
White Matter Myelinated axons that run together and form tracts.
Gray Matter Non-myelinated fibers
Dura Mater A tough white connective tissue.
Arachnoid Mater A web-like layer of connective tissue.
Pia Mater The deepest menix.
Cerebrospinal fluid A fluid made of blood plasma that forms a protective cushion around the central nervous system.
Spinal cord A cylinder of nervous tissue that extends through the foramen magnum (a hole in the skull).
Cerebrum The largest part of the brain and is composed of right and left hemispheres. It performs higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions.
Cerebellum Located under the cerebrum. Its function is to coordinate muscle movements, maintain posture, and balance.
Brainstem This includes the medulla, midbrain, and pons. This region of the brain performs automatic functions such as breathing, heart rate, body temperature, wake and sleep cycles, digestion, sneezing, coughing, vomiting, and swallowing
Gyri/Gyrus The folds in the brain.
Sulci/Sulcus The grooves between the folds in the brain.
Frontal Lobe Controls: Personality, behavior, speech, judgement, concentration, and self-awareness
Parietal Lobe Interpret language, processes and interprets the sense, visual perception
Occipital Love Interprets vision
Temporal Lobe Understanding language, memory, sequencing, and organization
Hypothalamus Plays a role in controlling behaviors such as hunger, thirst, sleep, and sexual response. It also regulates blood pressure, emotions, and secretion of hormones.
Pituitary Gland The pituitary gland is connected to the hypothalamus of the brain by the pituitary stalk. It secretes hormones that control sexual development, promote bone and muscle growth, respond to stress, and fight disease.
Pineal Gland It helps regulate the body’s internal clock and circadian rhythms by secreting melatonin. It has some role in sexual development.
Thalamus It plays a role in pain sensation, attention, alertness and memory.
Created by: Mr.Klein