Question

what is respiratory system?
what is skeletal system? ​

Answer 1

Answer:

The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.

The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. The bone mass in the skeleton reaches maximum density around age 21

Answer 2

Answer:

The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels.

The skeletal system includes all of the bones, cartilages, and ligaments of the body that support and give shape to the body and body structures.