Answer:
1. Electrical impulses in the heart cause the muscle to contract.
2. To keep the blood flowing in only one direction
Explanation:
In the first question, the correct answer is ''Electrical impulses in the heart cause the muscle to contract''. Every muscle in our body contracts because of electrical impulses and this is also true for our hearts. Or any hearts in nature that we know of.
In the second question, the answer is ''To keep the blood flowing in only one direction''. We have those valves and without them, we wouldn't be able to function as we do.
It said 60 to 100 so i would say 80
One function is to help regulate digestion.
Answer:
Endocrine glands secrete hormones over a membrane into the bloodstream.
Explanation:
The endocrine glands are characterized by the secretion of hormones that pass directly into the bloodstream. This is because, unlike the exocrine glands, they do not have ducts.
Hormones leave the endocrine cell through transmembrane transport, to reach the blood capillaries and from there to the general circulation.Once the hormones are released into the bloodstream they bind to specific effector cells, attaching to membrane receptors for these substances.
Risk Factors You Cannot Control:
1) Age
2) Gender
3) Family History
4) Accessibility to doctors (not having enough money, not having doctors, etc)
5) Being born with bad health (having asthma, weak immune system, etc)
Risk Factors You Can Control:
1) Use of smoking, alcohol, and drugs
2) Obesity
3) Inactivity
4) High Blood Pressure
5) High Cholesterol
