Why we cannot see our organs like the heart, blood vessels and intestines?

Why our organs like the heart, blood vessels and intestines are enclosed in body?

Why do we see moonlight ?

Donation of organs like eyes and heart after the death of a person.

Why do we eat fruits and vegetables? Do the plants also need minerals like we do?

Control of involuntary activities like the beating of the heart, blood circulation, breathing etc. are controlled by ………… . Spinal cord Cerebrum Cerebellum Medulla oblongata

Why we do consider blood as a connective tissue?

State whether the following statements are true or false. Correct the false statements. Activities like heart beat, blood circulation, breathing, sneezing, etc. are controlled by cerebellum.

Read the following extract and answer the questions that follow: A liberal view behind the concept of organ and body donation is that after death our body should be useful to other needful persons so that their miserable life would become comfortable. Awareness about these concepts is increasing in our country and people are voluntarily donating their bodies. Life of many people can be saved by organ and body donation. Blinds can regain their vision. Life of many people can be rendered comfortable by donation of organs like liver, kidneys, heart valves, skin etc. Similarly, body can be made available for research in medical studies. Many government and social organization are working towards increasing the awareness about body donation. ii) Name any four organs that can be donated.

Why do high cholesterol level in the blood cause heart diseases?