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StudyStack Set 2
content covered in weeks 6-12
| Term | Definition |
|---|---|
| Transverse abdominis | The deepest layer of abdominal muscles, with fibers that run horizontally (on a transverse plane), playing a key role in stabilizing the core and compressing the abdominal contents. |
| Biceps femoris | A muscle of the posterior thigh and part of the hamstring group, not the quadriceps femoris group. It functions to extend the hip and flex the knee. |
| Gray matter | Regions of the brain and spinal cord composed primarily of neuronal cell bodies, dendrites, and unmyelinated axons. It is involved in processing and integrating information. |
| Endoneurium | The deepest connective tissue layer of a nerve, surrounding each individual nerve fiber (axon) and its myelin sheath, providing support and protection. |
| Thoracic | Not a spinal nerve plexus. The thoracic spinal nerves (T1–T12) do not form a plexus, except for T1, which contributes to the brachial plexus. |
| Pineal gland | A small endocrine structure located deep in the center of the brain (in the epithalamus) that releases the hormone melatonin, which helps regulate the sleep-wake cycle (circadian rhythm). |
| Infundibulum | The anatomical stalk that connects the pituitary gland to the hypothalamus, allowing for the transport of hormones and regulatory signals between the two structures. |
| Fovea centralis | A small, central pit located in the macula lutea of the retina that contains the highest concentration of cone cells, responsible for sharp central vision and color perception. |
| Capillaries | Microscopic blood vessels that connect arterioles (small arteries) to venules (small veins), allowing for the exchange of oxygen, nutrients, and waste products between blood and surrounding tissues. |
| Lymphocyte | A type of white blood cell produced by lymphoid tissues such as lymph nodes. |