WebThe circulatory system is effectively a network of cylindrical vessels: the arteries, veins, and capillaries that emanate from a pump, the heart. In all vertebrate organisms, as well as some invertebrates, this is a closed-loop system, in which the blood is not free in a cavity. In a closed circulatory system, blood is contained inside blood ... WebThe heart is the main organ in the circulatory system, the structure is primarily responsible for delivering blood circulation and transportation of nutrients in all parts of the body. This continuous task uplifts the heart's role as a vital organ whose normal operation is constantly required. An adult's normal heart rate is at 72 beats per ...

Tissues, organs, & organ systems (article) Khan Academy

WebJan 28, 2024 · The Circulatory System: Also called the cardiovascular system, ... The skin and other parts of the integumentary system work hand-in-hand with the body's immune system, such as keeping out … WebJul 30, 2024 · The cardiovascular system is the system responsible for delivering blood to different parts of the body. It consists of the following organs and tissues: The heart: A muscular pump that... iphone home button assistive touch

Class 3 Science – Organ Systems of Our Body

WebFeb 28, 2024 · An organ system is a group of organs that work together in the body to perform a complex function, such as pumping blood or processing and utilizing nutrients. There are 11 major organ systems in … WebFeb 28, 2024 · There are 11 major organ systems in the human body: The circulatory system The lymphatic system The respiratory system The … WebThe vital function of the circulatory system is to transport blood to all parts of the body, which is extremely important because it carries nutrients, oxygen, carbon dioxide, hormones and blood cells which are required for … iphone home button alternative