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max2010maxim [7]
2 years ago
5

Type I muscle fibers

Medicine
1 answer:
dmitriy555 [2]2 years ago
7 0

Answer:

The answer is A

Explanation:

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In science, a theory
krok68 [10]

Answer:

B

Explanation:

A theory is a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, and which brings together many facts and hypotheses. 

7 0
3 years ago
Read 2 more answers
The heart is autorhythmic, which means it can generate its own action potential without outside nerve stimulation.
givi [52]

Answer:

a) True

Explanation:

The heart contains cardiac autorhythmic muscle cells, which are specialized cells that generate their own action potential without the need to receive it from nerve cells. These self-stimulated or self-excitable cells work together and function as the heart's natural pacemaker, which initiates an electric potential at a constant rate, and this potential travels through the heart triggering its contraction in an organized manner called the cardiac cycle.

These autorhythmic cells are found in the SA (sinoatrial) node in the right atrium of the heart, the AV (atrioventricular) node in between the atria and the ventricles, and in the fibers that connect these two nodes with each other and with the rest of the heart. All these structure working together is what's called the heart's electrical system.

7 0
3 years ago
Which two of the following are the best ways to improve your credit score?
Alex

Answer:

1. Pay your bills on time

2. Never pay less than to the minimum amount

Explanation:

Hope this will help

7 0
3 years ago
Why do you think illness anxiety disorder (hypochondriasis) continues in a person?
Scrat [10]

I think it continues in a person because of the surrounding environment they are in. Our health is the most important priority and dictates whether we live or die essentially which then causes more anxiety in a person. The importance of health in a person can cause continuous anxiety because it is always going to be a large part of our lives. Their obsession perpetuates from constant reminders that their health dictates their pain and ultimate survival.

Hope this helped! This is merely an opinion :)

5 0
3 years ago
Read 2 more answers
the acrosome contains enzymes used to ; what does the acrosome contain; what enzymes does the acrosome contain; the acrosome of
baherus [9]

The acrosome contains enzymes that break down the outer membrane of the egg cell, letting the sperm fertilize the egg.

What is an acrosome?

An acrosome is a unique membranous organelle that is located over the anterior part of the sperm nucleus.  It is highly conserved throughout evolution.

This acrosome contains a number of hydrolytic enzymes that help the sperm penetrate the egg's coats, when secreted.

The proteolytic enzymes such as hyaluronidase and acrosin are what help the sperm penetrate the eggs coat.

Acrosome comes from the Golgi complex of the spermatid. It consists of a protein matrix core and numerous hydrolytic and glycolytic enzymes, which are necessary for fertilization.

Therefore, the acrosome contains enzymes that break down the outer membrane of the egg cell, letting the sperm fertilize the egg.

Learn more about Acrosome here: brainly.com/question/9980164

#SPJ4

6 0
1 year ago
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