The heart is a muscle in the body that is about the size of a persons clenched fist. There are three types of muscle in the body: cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control. The heart ha...
Nervous tissue is responsible for many of the body’s activities and processes, including memory, reasoning and emotions. Signals from this tissue also cause muscle contractions. Neurons and glial cells make up nervous tissue. Humans have billions of neurons, in varying size, in their bodies. ...
“Apex” is a Latin word meaning “summit” or “peak,” and this part of the heart can be thought of in those terms, too. It’s formed mostly by the left ventricle and extends pretty far out to the left in most people. The muscle fibers in this part of the heart are primarily ...
A muscle strain is a twist, pull, or tear of a muscle or tendon. A tendon is a strong elastic tissue that connects a muscle to a bone.What are the types of muscle strains?A mild strain is also called a first-degree strain. It is a tear of a few muscle fibers with little ...
Which type of muscle is found in blood vessels? What type of muscle is the myocardium? What muscle hyperextends the humerus? What muscle moves the scapula? What type of muscle tissue is both striated and involuntary? What is the levator scapulae muscle?
Heartburn starts in an area called the gastroesophagealjunction, where the LES resides. This smooth, muscular ring of the LES is moderated by an intricate tree of nerve roots that connect to the brain, the heart, and the lungs. After ...
Muscle is made up of proteins called actin and myosin, which the actual percentage of each may differ depending on the type of muscle.
A Comprehensive Guide on Heart Failure Congestive heart failure (often called heart failure) is a chronic heart condition that occurs when your heart muscle is ineffective at pumping blood. As a result, your body hangs on to salt and water, causing your heart to beat faster and potentially get...
The gluteus maximus is the largest muscle in the body. The gluteus muscles are composed of skeletal muscle tissue. This muscle is probably one that you’re using right now whether you are sitting or standing. The gluteus maximum is located at the rear of the hip. This muscle is the larges...
A family history of a connective tissue disorder A lack of vitamin C, causing a connective tissue disorder called scurvyWhat are the signs and symptoms of a connective tissue disorder?Signs and symptoms depend on the type of connective tissue disorder and if it is severe. Symptoms may be mild...