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krek1111 [17]
3 years ago
6

Sensitive tissue in the right atrium wall that begins the heartbeat:

Biology
1 answer:
gavmur [86]3 years ago
7 0
Sinoatrial node

The sinoatrial node is found at the upper part of the right atrium's wall and it has a very vital role in regulating heartbeat. The cells in the sinoatrial node are specialized to generate electrical impulses, so this structure in the heart acts as a natural pacemaker. The impulses generated from the sinoatrial node then travel on to the atrioventricular node, from where ventricular and atrial contractions are carried out depending on how much of the signal the atrioventricular node lets through.
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Explain the relationship between genes, traits, and diseases like a sickle cell?
DedPeter [7]

Answer:

People with sickle cell trait carry only one copy of the altered hemoglobin gene and rarely have any clinical symptoms related to the disease. In contrast, people with sickle cell disease carry two copies of the altered hemoglobin gene.

Explanation:

3 0
3 years ago
PLEASE HELPPP! THANK YOU!
stepan [7]

Answer:

The circulatory and respiratory systems absorb oxygen from the air and transfer it to all parts of the body while absorbing carbon dioxide from the body and releasing it into the air. When a person inhales, the lungs expand and fill with fresh air.

Explanation:

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4 years ago
Binocular vision, the ability to focus both eyes on the same object at the same time, usually does not develop until ?
vekshin1

Binocular vision, the ability to focus both eyes on the same object at the same time, usually does not develop until  4-5 months of age.

Binocular vision is the type of vision in which both the eyes look in the same direction to form a 3-D image of the object. One single image is formed by both the eyes. When any disorder appears regarding the binocular vision, the core reason is the misalignment of both the eyes.

Eyes are the organs of vision. They are present in a pair embedded in a socket like region on the skeleton below the forehead. The image is formed at the retina of the eye. The image formed is an upside down image.

To know more about binocular vision, here

brainly.com/question/15167830

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3 0
2 years ago
In which of the following situations is evolution by natural selection most likely to occur?
Varvara68 [4.7K]

Answer:

b.

Explanation:

Natural Selection refers to the survivability of organisms based on different traits or genes that they have which then get passed on to their offspring. Based on this information we can say that a population of mountain gorillas in which individuals with genes for long hair survive the cold better is the situation in which natural selection is most likely to occur. This is because longer hair in this scenario is a gene that drastically affects the chance of survival for the gorillas and will most likely be passed on to their offspring.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

3 0
4 years ago
Cells can conduct many task, including which of the following
Zielflug [23.3K]

Cells are the basic structural, functional, and biological unit of all known living organisms. Cells of various types have different functions but the generalized cell functions include movement of substances across the cell membrane, cell division to make new cells, and protein synthesis. So, the answer is D, cell can conduct many tasks, including duplicate themselves, convert energy and selectively exchange materials.

5 0
4 years ago
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