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Definition
| A collection of nerve cell bodies, form the gray matter of the CNS |
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| Supporting cells of the nervous system... are about 5 times as abundant as neurons |
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| Fiber tract systems connecting nuclei in the CNS form the white matter |
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| Blood vessels supplying blood to nerve fibers |
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Definition
| Consists of an endoneurium, an axon, and neurolemma |
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| The cell membranes of the Schwann Cells - can take two forms, and support myelinated nerve fibers or unmyelinated nerve fibers |
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Definition
| Have a myelin sheath of a continuous series of Schwann cells enwrapping a single axon |
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| Unmyelinated nerve fibers |
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Definition
| When multiple axons are separately embedded within the cytoplasm of each Schwann cell, and are not myelinated... i.e. most cutaneous nerves |
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Definition
| Surrounds nerve fibers themselves, around Schwann cells and axon |
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| Layer of dense tissue surrounding a fascicle (bundle) of nerve fibers |
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| Thick connective tissue sheath around a bundle of fascicles |
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Definition
| A bundle of nerve fibers - these themselves are bundled into Nerves |
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Definition
| Collection of nerve cell bodies outside the CNS (i.e. where pseudounipolar sensory nerve bodies reside, e.g. the dorsal root ganglion) |
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| Area of skin innervated by a single spinal nerve |
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Term
| Types of Joints (by joining medium) |
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Definition
| Fibrous, Cartilaginous, Synovial |
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Term
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Definition
| Suture (i.e. connecting plates of skull), Syndesmosis (i.e. connecting the radius to the ulna of the arm) are most common, but gomphosis is the type that keeps the teeth attached to the gums |
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Definition
| Primary cartilaginous joints (synchondrosis) form the "growth plates" on long bones, which permit the bone to grow until the epiphysial plate turns to bone and the epiphyses fuse to the diaphysis. Secondary cartilaginous (symphysis) is fibrocartilaginous, i.e. the disc between vertebrae. |
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Definition
| Typical joint of the limbs, with synovial fluid and a joint cavity, as well as articular cartilage on both bones and a fibrous layer on the outside forming a fluid-filled joint capsule |
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Definition
| Attach upper limb to axial skeleton (posterior axioappendicular muscles) or used for respiration - motor innervation by ventral primary rami (except trapezius, which is innervated by the spinal accessory nerve) |
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Term
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Definition
| Maintain posture and move vertebral column, deep or "true" back muscles, motor innervation by dorsal primary rami |
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| Superficial extrinsic group (5) |
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Definition
| Trapezius, Latissimus Dorsi, Levator Scapulae, Rhomboid Major, Rhomboid Minor |
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| Intermediate extrinsic group (2) |
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Definition
| Serratus posterior superior, Serratus posterior inferior |
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| Fibrous Joint, connects skull plates |
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| Fibrous Joint, connects tooth to gums |
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Definition
| Fibrous joint, connects two bones with fibrous tissue (like radius and ulna) |
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Definition
| aka Primary Cartilaginous Joint - Union achieved by hyaline cartilage, i.e. btwn. first rib and manubrium or between diaphysis and epiphysis of growing long bone |
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Definition
| aka Secondary Cartilaginous joint (originally cartilaginous joint that later developed collagen fibers). Union achieved by fibrocartilage, yet with ends of articulating bones which are covered in hyaline cartilage. i.e. Symphysis pubis (midline between two pubic bones, or the discs between most vertebrae. |
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Definition
| The nerves that supply the muscles producing the movement of a joint also supply that joint |
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