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Korolek [52]
3 years ago
15

If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________

. A. heart rate would decrease, but blood pressure would rise due to the excess sodium present B. tetanic contraction would occur due to the short absolute refractory period of cardiac muscle C. threshold is reached more quickly and heart rate would increase D. potassium channels compensate and no change in heart rate would occur
Health
1 answer:
barxatty [35]3 years ago
5 0

Answer:

The correct answer is option C. threshold is reached more quickly and the heart rate would increase.

Explanation:

The natural pacemaker or cardiac pacemaker is the aggregations of cells that create electrical impulses that set the pace of blood pumping. The electrical impulses or the action potential are responsible for the contraction of the cardiac muscles. The rate of cardiac muscles is term as heart rate, which is control by the impulse or action potentials regulated by sodium influx and potassium outflux.

Thus, the correct answer is option C. threshold is reached more quickly and the heart rate would increase.

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What should diabetics eat as a snack before bedtime.
kherson [118]

Answer:

Try one the following healthful snacks before bed to help manage blood sugar levels and satisfy nighttime hunger:

1. A handful of nuts

Almonds, walnuts, and peanuts contain plenty of vitamins, minerals, and healthful fats. Almonds also contain plenty of vitamin E, and walnuts are especially rich in omega-3 fatty acids.

2. A hard-boiled egg

Eggs are a great source of protein, with one large egg providing 6.29 grams (g). Eggs also contain very few carbohydrates.

Try eating the egg with a couple of whole-grain crackers to add fiber. Fiber slows down the digestive process, releasing the energy from the food over a longer period. This may help keep blood sugar levels stable.

3. Low-fat cheese and whole-wheat crackers

Cheese provides protein, while whole-wheat crackers add dietary fiber. Choose a healthful type of unprocessed cheese.

Whole-wheat and whole-grain crackers have lower glycemic index scores than white varieties, meaning that they have less of an impact on blood glucose levels.

4. Baby carrots, cherry tomatoes, or cucumber slices

Non-starchy vegetables are a great choice for a snack. They are very low in calories, fats, and carbohydrates, while offering plenty of vitamins and minerals.

These vegetables also provide antioxidants and a good dose of fiber to boost heart and gut health. For more protein, add a low-fat cheese slice to this low-calorie snack.

5. Celery sticks with hummus

Celery is a low-calorie, high-fiber food that also provides vitamins and minerals. Pair celery or another non-starchy vegetable with hummus to add a source of protein.

For the best results, avoid highly processed hummus, and try making it at home by blending chickpeas, tahini, and lemon.

6. Air-popped popcorn

Depending on the method of preparation, popcorn can be a light, healthful snack. It contains vitamins, minerals, fiber, and protein. Add in a few mixed nuts for a source of protein.

7. Roasted chickpeas

Chickpeas provide a healthful boost of protein and fiber, providing 11.81 g and 10.6 g, respectively, per cup.

A person can prepare this easy snack in under 1 hour, for example by following this spicy roasted chickpeas recipe.

8. Sliced apple and peanut butter

Peanut butter is rich in protein, fiber, and healthful fats, an attractive nutritional profile for anyone looking to help control blood sugar levels.

Apples provide a range of vitamins, minerals, and antioxidants. The ADA say that apples can play a role in a healthful diet for people with diabetes.

Try cutting an apple and adding a light spread of peanut butter to each slice. Or, try a different type of nut butter, such as almond or cashew butter.

9. Sugar-free Greek yogurt

The ADA advise that, along with skim milk and some reduced-fat cheeses, yogurt is one of the most healthful types of dairy. Yogurt contains calcium and high-quality protein.

10. A handful of seeds

Like nuts, seeds are a great source of protein, healthful fats, and fiber. Try a small handful of a mix of sunflower, sesame, and pumpkin seeds in the evening.

Explanation:

Eat mindfully by focusing on enjoying the food.

Avoiding snacking in front of the television or while reading, driving, or otherwise distracted.

Plan meals, snacks, and treats ahead of time.

Choose healthful snacks, rather than ones that contain empty calories and low-quality carbohydrates.

Learn about and pay attention to portion sizes.

5 0
2 years ago
Antimetabolites are used to treat various cancers and
Mumz [18]

The right answer is A.

Antimetabolites are used as a drug that disrupts metabolism (chemical processes necessary for the functioning, growth and reproduction of normal and cancer cells). These molecules have a structure similar to those of metabolites, there will be a competition between metabolites and antimetabolites to bind to enzymes.

Antimetabolites are used as a cancer treatment to destroy cancer cells.

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4 years ago
Which set of symptoms describes the short-term effects of marijuana
RoseWind [281]
Altered senses with difficulty in thinking and impaired memory.
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3 years ago
I am currently 13 years old about to be 14 in 1 month, and I am 6 feet 4 inches tall.
KatRina [158]
6 ft 6 inches probably I don't know.
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steposvetlana [31]

Answer:

15 percent

Explanation:

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