Answer:
The elecron cloud is located around the nucleus.
The electron cloud contains negitivley-charged electrons.
A higher effectivly nuclear charge causes greater attractions to the electrons causing them to come closer.
The faster a electron goes the farther away it will go.
The blood first leaves the heart through the <u>brachiocephalic trunk common carotid. </u>
Next it flows into the <u>aorta axillary,</u> which is found in the medial upper arm.
The <u>aorta axillary</u><u> </u>out of the three branches of the aorta takes blood to the right arm.
Blood going to the thumb would travel through the<u> subclavian</u> in the lateral side of the forearm.
After blood flows through the <u>radial</u> it flows into the <u>ulnar,</u> which is found in front of the scapula.
Explanation:
1. Brachiocephalic trunk carries blood from the left ventricle of the heart to branch arteries.
2. Aorta in the human body is the largest artery. It starts from the top of the left ventricle which is called the heart's muscular pumping chamber. The heart, therefore, pumps blood from the left ventricle into the aorta through the aortic valve.
3. Subclavian veins carry blood to the heart and their function is to empty blood from the upper extremities and then carry it back to the heart.
4. Radial bone is one of the two large bones of the forearm. It is located on lateral side of the elbow to the thumb side of the wrist and parallel to the ulna.<span>
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So cells have what are called telomeres. These act as a dividing limit. The point of limiting the amount of times a cell can divide and reproduce is to help prevent cancer. Cancer is simply uncontrolled division of unhealthy cells. By limiting cell division one can help prevent cancer.
Answer:
Blood is composed of several types of cells:
- <u>RED BLOOD CELLS</u>: They are the oxygen carriers of the body i.e. they pick up the oxygen as the blood goes through the lungs & release of oxygen to cells.Also known as erthrocytes
- <u>WHITE BLOOD CELLS</u>: also known as leukocytes.They are the soldiers of the body.Aims at fighting against the infections ( caused by bacteria & virus)
- <u>PLATELETS</u> : helps in the blood clot in response to any wound or injury
There are five types of white blood cells & approx %age they made up in blood are:
•Neutrophils (55% to 70%)
•Band neutrophils (0% to 3%)
•Lymphocytes (20% to 40%)
•Monocytes (2% to 8%)
•Eosinophils (1% to 4%)
•Basophils (0.5% to 1%)
When children are more than 4 year old they have higher % age of lymphocytes than the adults do.
The shape is a a double helix ! single strand is one side