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Noush Sulahian
Physiology weeks 7-13
| Term | Definition |
|---|---|
| Depolorization | Movement of the membrane potential toward zero |
| Hyperpolarization | Movement of the membrane potential away from zero |
| Brachial plexus | Found deep within the shoulder. It passes from the ventral rami of spinal nerves C5 through T1, beneath the clavicle (collarbone), and toward the arm |
| Lumbar plexus | Formed by the intermingling of fibers from the first four lumbar nerves. This network of nerves is located in the lumbar region of the back near the psoas muscle. T |
| Olfaction | Our sense of smell. It helps us interpret our environment by detecting molecules called odorants given off by organisms and substances around us. |
| Extrinsic eye muscles | Skeletal muscles that attach to the out-side of the eyeball and to the bones of the orbit. They move the eyeball in any desired direction and are, of course, voluntary muscles. |
| Pericardial space | Space between the visceral layer adhering to the heart and the parietal layer adhering to the inside of the fibrous sac. It contains 10 to 15 ml of pericardial fluid, a lubricating fluid secreted by the serous membrane. |
| Capillary | Microscopic vessel that carries blood between arteries and veins and permits exchange of substances be-tween the blood and the surrounding tissue. |
| Lymphoid tissue | a type of reticular tissue that contains lymphocytes and other defensive cells. |
| Lymph nodes | Also known as lymph glands, are oval or bean-shaped structures. a biological filter placed in the channel of several afferent lymph vessels |
| Phagocytosis | A major component in the body's second line of defense. The ingestion and destruction of microorganisms or other small particles. |
| Functional residual capacity | The amount of air left in the lungs at the end of a normal expiration, that is, without contracting expiratory muscles. |
| Deglutition | The process of swallowing. |
| Mastication | The process of chewing/chewing movements. |
| Peristalsis | wavelike ripple of the muscle layer of a hollow organ. |