Which hormone is released during breastfeeding to eject milk? MCQ with Answer and Explanation

Explanation:
Bacterial infections (like tuberculosis, pneumonia) are effectively treated with antibiotics, which target specific bacterial structures or metabolic pathways. Many viral diseases (like polio, measles, influenza) can be prevented through vaccination, which stimulates the immune system to develop memory against the virus. Fungal diseases (like ringworm, candidiasis) are caused by fungi, not protozoa; protozoa cause diseases like malaria and amoebiasis. Thus, statements 1 and 2 are correct.

Explanation:
The respiratory system, primarily the lungs, facilitates the exchange of gases (oxygen and carbon dioxide) between the blood and the external environment. The circulatory system, centered around the heart and blood vessels, transports blood containing oxygen, nutrients, hormones, and waste products throughout the body. The excretory system, primarily the kidneys, filters blood to remove metabolic waste products and excess water, excreting them as urine. All statements are correct.

Explanation:
The diaphragm is a skeletal muscle, not smooth muscle. All other statements are correct.