Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Overview of Nervous
16.1--Overview of Nervous Tissue
| Term | Definition |
|---|---|
| Central Nervous System | Brain and Spinal Cord; continuous via foramen magnum. Control sensory info, thoughts, emotions, memories, muscles, and glands. |
| Peripheral Nervous System | All nervous structure outside CNS; cranial nerves, spinal nerves, ganglia, enteric plexuses, and sensory receptors |
| Cranial Nerves | Base of brain; 12 pairs |
| Nerve | Bundle of hundreds to thousands of axons, connective tissue, and blood vessels. |
| Spinal Nerves | 31 pairs; Right or left side of body |
| Ganglia | Masses of nervous tissue consisting primarily of neuron cell bodies. Located outside brain and spinal cord. Associate with Cranial and Spinal Nerves. |
| Enteric Plexuses | Regulate Digestive System |
| Sensory Receptors | Monitor changes in internal and external environment. Receptors in skin that detect touch. |
| Three Major Functions | Sensory (input), integrative (control), and motor (output) |
| Sensory Neurons | Afferent -- carry info to brain and spinal cord via cranial and spinal nerves. Can detect internal and external stimuli |
| Integration | Analysis and storage of sensory input, allowing for decision making and responses. |
| Perception | Conscious awareness of sensory stimuli. Occurs in brain. |
| Interneurous | Connect with other neurons; short distance axons. Make up majority of CNS |
| Motor Neurons | Efferent Neurons-- elicit motor response |
| Effectors | Muscles and Glands |
| Somatic Nervous System | Part of PNS. Consist of somatic sensory neurons and somatic motor neurons. From skin, skeletal msucles, joints and senses. |
| Somatic Motor Neurons | Only efferent to skeletal muscles. Voluntary. |
| Autonomic Nervous System | Autonomic (visceral) sensory neurons and auto motor neurons (to smooth muscle, glands, and cardiac muscle). Not voluntary reactions (auto) |
| Sympathetic Division | Helps support exercise, emergency action. Wider distribution of neurons because closely connected with cardiovascualar system |
| Parasympathetic Division | Rest and digest activites. Regulator of digestive and respiratory systems. |
| Enteric Nervous system | Brain of Gut. Sensory neurons monitor chemical changes. Motor neurons monitor smooth muscle control and secretions. |
Created by:
100000434525601
Popular Anatomy sets