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
Ch.8 - Terms
Terms & Defs
| Term | Definition |
|---|---|
| Nervous System | Controls homeostasis. |
| 1st Function of Nervous System: | Help detect changes in the internal and external environment. |
| 2nd Function of Nervous System | Analyze the change. |
| 3rd Function of Nervous System: | Organize the information for immediate use or for future use. |
| 4th Function of Nervous System: | Cause a response to the change. |
| Anatomical Divisions | Central Nervous System (CNS) & Peripheral Nervouse System (PNS) |
| Functional Divisions | Sensory division & Motor division |
| Central Nervous System (CNS) | Brain / spinal cord |
| Peripheral Nervous System (PNS) | Receptors:nerves / Effectors:muscles & glands. |
| Sensory Division | Takes info about changes from the receptor and sends to the CNS. |
| Motor Division | Takes info from CNS and sends to an effector. |
| Somatic Nervous System | Takes info from our CNS and sends to our skeletal muscle (voluntary). |
| Autonomic Nervous System | Takes N.I. from CNS and sends to cardiac muscle, smooth muscle, and glands. |
| Neurons | The functional unit of the nervous system. |
| Neurons | Transmit neural impulses. |
| Myelin Sheath | Made from lipids and proteins. |
| Sensory Neurons | Carry N.I. from the body to the CNS (from receptors). |
| Interneurons | Receive signals from sensory neurons; transmit them from place to place in CNS, activate motor neurons (Inside CNS). |
| Motor Neurons | Transmit signals to effectors to produce an actions (muscles and glands). |
| Neuroglia | Schwann Cells, Oligodendrocytes, Astrocytes, and Microglial Cells. |
| Neuroglia located in the PNS. | Schwann Cells |
| Neuroglia located in the CNS. | Oligodendrocytes, Astrocytes, and Microglial Cells. |
| Scwann Cells | Makes the myelin sheath around axons in the PNS. |
| Neurilemma | The outermost layer of the myelin sheath in the PNS; allows for regeneration of the axon is damaged. |
| Oligodendrocytes | Makes the myelin sheath around axons in the CNS. |
| Schwann Cells | Has Neurolemma. |
| Oligodendrocytes | Does not have Neurolemma. |
| Astrocytes | Skeletal support for brain and spinal cord. |
| Astrocytes | Help stimulate neuron growth. |
| Astrocytes | Regulates the exchange of oxygen and nutrients between blood and neurons; relays waste to blood from Neuron. |
| Microglial Cells | Phagocytosis in the CNS - eats dead cells and debris. |
| Irritability | Ability to form a N.I. when stimulated. |
| Conductivity | Ability to transmit a N.I. to another cell. |
| Synapse | A junction between an axon and another cell. |
| Two structures of a synapse. | Synaptic Knob, synaptic cleft. |
| Excitatory Neurotransmitters | Cause a N.I. in the next cell. |
| Inhibitory Neurotransmitters | Prevents a N.I. in the next cell. |
| Cerebrum | Largest part of the brain that performs higher brain functions. |
| Gyri | Folds in the brain. |
| Sulci | Grooves in between the folds. |
| Cerebral Hemisphere | Left and right portions of the Cerebrum |
| Corpus Callosum | Connects right and left cerebral hemispheres. |
| Longitudinal Fissure | The space that separates the right and left cerebral hemisperes. |
| White Matter | Located on the inside of the brain and helps transmit N.I. |
| Grey Matter | Made of dendrites, cell bodies, and the ends of axons ; normally found on the surface of the brain but can sometimes be found deep inside white matter. |
| Grey Matter | Also know as the cerebral cortex, the - - - - matter is where you have the ability to analyze and process info. |
| Structures of Diencephalon | Thalamus / Hypothalamus |
| Thalamus | Relay station between cerebrum and the rest of the brain. |
| Hypothalamus | Controls autonomic nervous system ; maintains homeostasis. |
| 3 Components of the brain stem | Midbrain, Pons, and Medulla Oblongata. |
| Midbrain | Visual and auditory reflexes. |
| Pons | Connects lower and higher brain areas (relay). Small role in controlling rate and depth of breathing. |
| Medulla Oblongata | Respiratory, cardiac, and vasomotor control center. |
| Reticular Formation | Sends stimulation to cerebral cortex ; Arousal and wakefulness. |
| Medulla Oblongata | Part of brain stem connected to spinal cord. |
| Damage to the Cerebellum: | Loss of equilibrium, muscle coordination, and muscle tone. |
| 2 divisions of ANS | Sympathetic and Parasympathetic |
| Sympathetic Division | This division of ANS prepares the body for physical action to meet emergencies. |
| Parasypathetic Division | This division of ANS is dominant under normal, nonstressful conditions of everydaylife. |
Created by:
Jamiew0282
Popular Science sets