c). The human heart is about the size of an adult's fist.
A fist-sized organ, the heart circulates blood throughout your body. It serves as your circulatory system's main organ.
Four major muscle-driven chambers make up your heart; they are each powered by electrical impulses. Your nervous system and brain control how your heart beats.
The main organ of your circulatory system, a web of blood vessels that circulates blood throughout your body, is your heart. It also interacts with other bodily systems to regulate your blood pressure and heart rate. Your lifestyle, family history, and medical history are all factors that determine how well your heart functions.
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Its the fourth one hope i helped
A.) Pipe-line fuel <span>is natural gas used for in the United States?
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Answer:
They are secreted from pancreatic cell through exocytosis.
Explanation:
Beta cells of the pancreas are responsible for the synthesis and release of insulin in the blood. Insulin is released in the blood when the blood glucose level reaches above the normal blood glucose level.
Once the beta cells are insulated the insulin is released from the cell by the process of exocytosis and reaches to blood capillaries of islets. Insulin is made up of A and B chain when released in the blood but in proinsulin, a C chain is also present which is released in mature insulin.
Therefore exocytosis is responsible for releasing insulin from the Beta-cell of the pancreas.
A, b's lifestyle would be constant pain, reduce in height etc.
