Question

Briefly describe the advantages of the presence of EACH mammalian organ system:

The digestive system, circulatory, respiratory, immune/lymphatic, excretory, endocrine, reproductive, nervous, integumentary, skeletal, and muscular

Answer 1

Digestive system helps mammals to digest the food material and convert large macromolecules such as carbohydrate, proteins and lipids to their building blocks which facilitate their ready absorption by the gut wall.

Circulatory system helps to circulate nutrient and oxygen to every cell of the body and at the same tie it helps to eliminate carbon di oxide and waste nitrogenous waste fro the cells of the body.

respiratory system helps mammals to exchange gas between body and environment. They helps to take fresh oxygen from nature and eliminate waste CO₂ through respiration. They also helps in thermoregulation.

immune / lymphatic system helps mammals to fight against any pathogen which otherwise may cause disease. They are the defense system of the body and fights against pathogens to keep l healthy and fit.

Excretory systems extract nitrogenous waste products from the blood and after selective absorption and secretion, eliminate the nitrogenous waste products to outside.

endocrine system secretes various hormones and together they acts as chemical messenger system. They controls various metabolic activities in the cell and coordinate them in a precise manner

reproductive system helps mammal to form sperms and ova. In reproductive system , fusion of gametes takes place and the embryo develops in mother's womb upto delivery of the baby. This system helps to create new generation.

Nervous system in mammals  are responsible for the control of the body and communication among its parts. It also receives various sensation from nature and response according them.

Integumentary system is consist of skin which is the primary barrier of the invading pathogens. They also helps mammals to thermoregulate and they also excretes some materials

skeletal system forms the basic framework of a mammals and supports the body to function properly. They also produce various type of blood cells including immune cells in the bone marrow, They helps in movement and also is the storage site of minerals.

Muscular system helps in movement of the body in mammals and also helps to stabilize joints, maintain posture and generate heat during activity