Generally speaking, the heart is mostly made of muscle tissue and blood vessels.
Muscle tissue
skeletal muscle
The heart is made up of muscle tissue (cardiac muscle). The muscle tissue contracts to pump blood.
smooth muscle cell tissue
tissue
The anus is made out of a combination of smooth muscle tissue, connective tissue, and epithelial tissue. Smooth muscle tissue helps with the control of bowel movements, while connective tissue provides support and structure, and epithelial tissue lines the inner surface of the anus.
Muscle is an organ! An organ is made up of a group of tissue and muscle is made up of a group of tissue! So muscle is an organ sure! Just me!
Though sometimes, some people refer to the brain as a muscle, it really is not a muscle. It is made of completely different types of tissues than a muscle. There are four kinds of tissues in the body; connective tissue, epithelial tissue, muscle tissue, and nervous tissue. The brain is made entirely of nervous tissue and contains no muscle tissue what-so-ever.
The muscular system is made of a type of tissue called muscle tissue. There are three main types of muscle tissue: skeletal muscle, smooth muscle, and cardiac muscle. Each type has unique characteristics and functions within the body.
nerve cells make nervous tissue and muscle tissue is made up of muscle cells
Fat is adipose tissue which is a connective tissue.