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Chapter 8
The Nervous System 8.2
| Term | Definition |
|---|---|
| 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
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