Nervous System Word Scramble
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| Term | Definition |
| Sympathetic System | Fight or Flight, Helps body cope with emergency situations. |
| ParaSympathetic | Rest and Restore, brings body back to resting state, facilitates all body processes to replace resources used during emergency |
| What does endocrine & Nervous system have in common when it comes to communication and control? | They both use chemicals to carry messages. |
| What are the 2 main divisions in the nervous system? | Central Nervous System (CNS) and Peripheral Nervous System (PNS) |
| Central nervous system definition? | Brain and spinal cord |
| Peripheral Nervous System Definition? | Nerves to link the CNS to rest of the body |
| What are the three main activities of the nervous system? (SIM) | Sensory-Recieves, analyze, and store Integrating function- produce response Motor function-Instructions to body |
| T OR F, neurons=nerve cells, have high requirement of oxygen? | T |
| What does neuroglia do for neurons/nerve cells? | Support and protect |
| Whats the function of dendrites? | Receives stimuli |
| Function of Axons? | impulses |
| Define Afferent? | Conducts stimuli Towards Cell Body. |
| What is a myelinated axon? | conducts impulses FASTER than those without myelin. |
| What does the spinal cord have that sends signals to the body? | Gray and White Mater |
| What is Efferent? | Conducts Impulses AWAY from CNS. also called motor nerves. |
| What are mixed nerves? | nerves may contain both kinds of nerve fibers most nerves in the PNS are mixed nerves |
| What is Autonomic Nervous System? | coordination of automatic body functions example is stimulating release of digestive juices in response to ingestion of a meal |
| What is Somatic Nervous system? | conscious or voluntary control of skeletal muscles |
| True or False, Polarization means extremely active and going. | False, Polarization means resting state. |
| What is Refractory Period? | very brief time period when a neuron is insensitive to additional stimuli |
| List four Neurotransmitters. | Acetylcholine, Catecholamines, GABA, Glycine |
| List four ways to stop the neurotransmitters. | acetylcholinesterase monoamine oxidase (MAO) catechol-O-methyl transferase (COMT) |
| white matter | contains most of the myelinated nerve fibers |
| gray matter | contains most of the neuron cell bodies |
| Whats the largest part of the brain and what does it do? | Cerebrum=functions associated with learning and intelligence |
| What is the purpose of reflexes? | rapid, automatic responses to stimuli designed to protect the body designed to maintain homeostasis |
| pupillary light reflex (PLR) | normal response to shining light in the eye of an animal is for the iris in both eyes to constrict |
| palpebral reflex | light tap on medial canthus of eye produces a blink of eyelids |
| What is pupillary Light Reflex Hint: POKE THE EYEBALL FOR REACTION | normal response to shining light in the eye of an animal is for the iris in both eyes to constrict |
| What is Crossed extensor reflex. | contralateral reflex afferent sensory impulse synapses with interneurons - crosses to other side of spinal cord and stimulates muscles that extend the opposite limb. ie. falling over and stops yourself fm falling over tack |
| What Withdrawal Reflex. (Flexor Reflex) | also called flexor reflex several interneuron synapses results in contraction or flexing of muscles Example - pulling hand away from hot stove |
| What is Stretch Reflex. | Simple two neuron reflex arc Muscle is stretched and send impulse to spinal cord Send signal back to contract Body can maintain tension and tone to prevent overstretching Example - patellar ligament tap…knee jerk reflex |
| What is Hypperflexive. | with injury, intact reflex arcs caudal to the spinal cord trauma become |
| What is Hyporflexive. | with injury where the reflex arc enters or leaves the spinal cord, or damage to sensory or motor nerves of the reflex |
| What is the Reflex Arc? |
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