DAANCE Module 1-Basic Sciences Verified A+ - Neurons: ️ Conduct nerve impulses. - Synapse: ️ Junction between two neurons. - Central Nervous System (CNS): ️ Made up of the brain and spinal cord. - Parts of the Brain: ️ Cerebrum, cerebellum, medulla oblongata. - Peripheral Nervous System (PN...
- Central Nervous System (CNS): ✔️ Made up of the brain and spinal cord.
- Parts of the Brain: ✔️ Cerebrum, cerebellum, medulla oblongata.
- Peripheral Nervous System (PNS): ✔️ Made up of sensory and motor nerves.
- Cranial Nerves: ✔️ There are 12 cranial nerves.
- Trigeminal Nerve (Cranial Nerve V): ✔️ Controls sensation to the teeth and jaw.
- Components of the Autonomic Nervous System: ✔️ Sympathetic nervous system and
parasympathetic nervous system.
- Nervous System That "Speeds Things Up": ✔️ Sympathetic nervous system.
- Nervous System That "Slows Things Down": ✔️ Parasympathetic nervous system.
- Sympathetic Nervous System and the Heart: ✔️ Has terminations at all levels of the heart.
- Stimulation of the Sympathetic Nervous System: ✔️ Causes vasoconstriction in general and increases
heart rate.
, - Nervous System Important for Maintaining Blood Pressure: ✔️ Sympathetic nervous system.
- Vasomotor Control: ✔️ Controlled by the sympathetic nervous system.
- Vasomotor Function: ✔️ Controls the diameter of blood vessels.
- Function of Baroreceptors: ✔️ Regulate blood pressure with positional changes.
- Sympathetic or Adrenergic Effects: ✔️ Involve two effects (A and B) affecting several tissues and
organs.
- Alpha Effect: ✔️ Vasoconstriction.
- Beta Effect: ✔️ Seen in larger organs, such as heart and lungs.
- Beta 1 Activity: ✔️ Related to heart functions, such as increased heart rate and strength of
contraction.
- Beta 2 Activity: ✔️ Pertains to pulmonary function of bronchiolar dilation (lungs).
- Parasympathetic Stimulation: ✔️ Increases digestive tract activity, stimulates saliva and pharyngeal
secretions (atropine or Robinul can counteract stimulation).
- Automaticity of the Heart: ✔️ The heart pumps on its own.
- Four Chambers of the Heart: ✔️ Left atrium, right atrium, left ventricle, right ventricle.
- Blood Flow into the Left Atrium: ✔️ Receives oxygen-rich blood from the lungs via the pulmonary
vein.
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