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Kacey Munsell
Weeks 6-12 Anatomy
| Term | Definition |
|---|---|
| Central nervous system (CNS) | Brain and spinal cord |
| Peripheral nervous system (PNS) | Consists of the nerve tissues that lie in the periphery, or “outer regions,” of the nervous system. |
| Somatic nervous system (SNS) | Regulates the somatic effectors, which are the skeletal muscles. |
| Autonomic nervous system (ANS) | Carry information to the autonomic, or visceral, effectors, which are mainly the smooth muscles, cardiac muscle, glands, adipose tissue, and other “involuntary” tissue. |
| Enteric nervous system (ENS) | Intestinal nervous system |
| Nociceptor | Pain; temperature; itch; tickle |
| Tactile (Merkel) disk | Discriminative touch (light pressure) |
| Root hair plexus | Sense of “deflection” type of movement of hair |
| Tactile (Meissner) corpuscle | Touch; low-frequency vibration |
| Bulboid (Krause) corpuscle | Touch; low-frequency vibration; textural sensation |
| Bulbous (Ruffini) corpuscle | Crude and persistent touch |
| Muscle spindles | Sense of muscle length (proprioception) |
| Golgi tendon receptors | Sense of muscle tension (proprioception) |
| Natural immunity- Active (exposure) | A child develops measles and acquires an immunity to a subsequent infection |
| Natural immunity- Passive (exposure) | A fetus receives protection from the mother through the placenta, or an infant receives protection through the mother’s milk |
| Artificial immunity- Active (exposure) | Injection of the causative agent, such as a vaccination against polio, confers immunity |
| Artificial immunity- Passive (exposure) | Injection of protective material (antibodies) that was developed by another individual’s immune system |
| Natural immunity | Exposure to the causative agent is not deliberate |
| Artificial immunity | Exposure to the causative agent is deliberate |
| Upper respiratory tract | Nose, nasopharynx, oropharynx, laryngopharynx, and larynx. |
| Lower respiratory tract | Trachea, all segments of the bronchial tree, and the lungs. |