Answer:
CDC is the correct organization .
Nerves. The brain and spinal cord are part of the CENTRAL nervous system, and the kidneys are part of the renal system.
The factors to consider when planning food for invalid and convalescent are Time available, budget, allergies, food dislikes, availability of foods.
<h3>Who is a convalescent?</h3>
A convalescent is an individual that just recovered from an illness while and invalid is an individual that is weakened due to an injury or an ongoing illness.
When preparing a meal for both the invalid and convalescent the following factors should be considered:
- Time available: Time for preparation of food should be considered as this may affect the duration of their medication.
- Budget: The meal should be planned based on the money available.
- Allergies: The food should be devoid of any form of constituents that may cause allergies.
Learn more about an invalid here:
brainly.com/question/1833835
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Answer:
1. spontaneously
2. resting potential
3. action potentials
4. pacemaker potentials
5. K+
6. Na+
7. into
8. Ca+
Explanation:
Pacemaker cells (also known as sinoatrial node cells) are cells that generate rhythmic impulses and set the pace for blood pumping in the heart. These cells have the ability to rhythmically depolarize and initiate action potentials. In pacemaker cells, Ca2+ and Na+ levels are higher in the extracellular environment, while K+ concentration is higher intracellularly. The pacemaker action potentials have three phases: 1-depolarization, where membrane potential reaches -40 mV and voltage-gated Ca2+ channels open, 2-repolarization, where voltage-gated Ca2+ channels close and voltage-gated K+ channels open, and finally 3-gradual depolarization, which is caused by the slow influx of Na+ ions.
