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Bess [88]
3 years ago
14

What three mechanisms regulate the heart?

Biology
1 answer:
Tamiku [17]3 years ago
7 0
The three mechanisms which regulate the heart are endocrine, cardiovascular and Sinoatrial nodes.
The endocrine system consists of the glands and hormones of the human body. The cardiovascular system is the organ system which is responsible for the circulation of the blood around the body and the oxygenation of the body's tissues. The sinoatrial node (SA node) generates the electrical impulses and is considered the natural pacemaker of the heart.
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Who devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations?.
Dominik [7]

Landsteiner Bertillon devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations.

<h3>What about blood group?</h3>
  • According to the presence or absence of antibodies and hereditary antigenic compounds on the surface of red blood cells, blood is classified according to its type.
  • Depending on the blood group system, these antigens could be proteins, carbohydrates, glycoproteins, or glycolipids.
  • The genes that a person got from their parents determine what blood type they have.
  • There are numerous systems for classifying blood types, but ABO is the most popular one.
  • The ABO group is divided into four main categories: A, B, O, and AB.
  • There are eight more blood types within these groupings.
  • Each of the eight blood types has a particular ability to save lives.
  • The majority of people (37% of the population) have the blood type O+, which is the most prevalent. This indicates that there is a greater need for this blood type for blood transfusions.

Learn more about blood group here:

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6 0
1 year ago
I WILL GIVE BRAINLIEST 100 points
pogonyaev
The answer is b, chromatin
7 0
2 years ago
A muscle cramp is a sudden, painful contraction of a muscle, during which movement is difficult. What is happening at the cellul
Leokris [45]

D. Myosin and actin do not fully detach, so the muscle cannot relax.

7 0
3 years ago
Read 2 more answers
Which is a limitation of a scientific model?
iren [92.7K]

Answer:

The correct option is<em> D)  Models are not the "real thing" so it will never correctly represent the system in all respects.</em>

Explanation:

Scientific modelling can be described as a representation of the scientific theories or concepts in a way that can be better understood. Scientific models makes it easier to understand what physical, chemical or mechanical activity is taking place. Even mathematical representation comes under scientific modelling.

As models are not the real, hence they cannot be considered to be perfectly accurate. A model can never mark up to the complexity of nature.

8 0
3 years ago
Which type of society is most likely to produce a great number of crops?
andrew11 [14]

Answer:

B. Postindustrial

Explanation:

A type of society in which food production—carried out through the use of human and ... Production is slow, and the amount that can be produced is limited. In preindustrial societies most economic activities are carried out within the home setting. ... Higher crop yields allow agricultural societies to support large populations.

7 0
3 years ago
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