Biology News
Department of Chemistry and Biochemistry Invests in System to Recycle a Precious Resource, Helium - University of Arkansas Newswire


University of Arkansas Newswire
The Department of Chemistry and Biochemistry in the J. William Fulbright College of Arts and Sciences recently installed a liquid helium recovery system. Wesley Stites, the department's chair, said the investment for the system cost about $250,000, but ...

Pharmacology of CAR-T Cells - News-Medical.net


News-Medical.net
Chimeric antigen receptor (CAR)-T cells are T cells which are genetically modified by the addition of tumor-reactive chimeric antigen receptors (CARs). The T cells are the workhorses of the immune system. Adoptive transfer of these cells is an emerging ...

Anthony Bourdain Had No Narcotics in His System When He Died, French Official Says - New York Times


New York Times
Anthony Bourdain did not have narcotics in his body when he died this month, a French judicial official said. Mr. Bourdain, a New York chef, author and television correspondent whose death shook fans across the world, was found dead on June 8 in a ...

Innerbody: Muscular System

California, Los Angeles - United States

The muscular system is a system of tissues - called muscles - throughout the body which allow you to move. Most of the muscles in the body are under conscious control and are moved by commands sent to the muscles from the brain via the nervous system. However, some muscles (such as the cardiac muscles) are involuntary - that is, they move regularly without any conscious control. Except for the involuntary muscles, muscle fibers are connected to the skeletal system by tendons and other tissues; the muscles exert force by converting chemical energy into tension and contraction. Muscles are made up of millions of tiny protein filaments which work together to produce motion in the body. They move and make us capable of a variety of actions by simply contracting and becoming shorter or by relaxing and becoming longer. Muscles pull, but they cannot push.

Each person has over six hundred muscles; these are served by nerves which link each individual muscle to the brain and spinal cord. Our bodily needs demand that muscles accomplish different chores, so we are equipped with three types of muscles. Cardiac muscles, found only in the heart, power the action that pumps blood throughout the body. Smooth muscles surround - or are part of - the internal organs. Both cardiac and smooth muscles are called involuntary muscles, because they cannot be consciously controlled. The skeletal muscles are the third muscle type. These carry out voluntary movements and are what ache after strenuous exercise. Skeletal muscles are the body's most abundant tissue, comprising about 23% of a woman's body weight and around 40% of a man's body weight.

Related
HistoWeb: Muscular System
United States

Offers a series of sides illustrating the difference on the cellular level between skeletal, smooth, and cardiac muscle.

ThinkQuest: Muscular System
United States

Muscles are responsible for your body's every move. Muscles keep your gut from sagging and your lungs pounding. Muscles are more than movers. Muscles make the heat that keep you warm. If you leap, bend, or reach, this is a result of a muscle action. A muscle makes itself smaller when it contracts and larger when it relaxes. Types of Muscles: Skeletal Smooth Cardiac

United States

The muscular system consists of the more than 600 muscles of the body and their associated fascia, tendons, tendon sheaths, and bursae. Muscles largely consist of skeletal muscle fibers, and are innervated by motor nerve fibers of peripheral nerves. Conscious and subconscious contractions of muscles affect body posture, and generate reflex, spontaneous (or automatic), and voluntary movements.

Critical Bench, Inc. Muscular System
United States

Skeletal muscle tissue is attached to bones by tendons, and is typically named according to its location. Skeletal muscle is voluntary muscle; that is, it can be made to contract by conscious effort. Cardia muscle tissue forms the walls of the heart and is involuntary by nature. The third type of muscle, visceral muscle is found in the walls of internal organs like the stomach and intestines and in blood vessels. The contraction of visceral

Buzzle - Muscular System Diseases
United States

Musscles are very important part of our body. Without muscles the body will lose its ability to move and carry out various actions. In fact, without the human muscular system, we probably won't be able to survive. This is because most of the organs in the digestive system are made up of muscles and even our heart that keeps pumping blood is a muscle. If the muscular system is affected by any disease or disorder, it leads to many minor and in some

Livestrong - Five Functions Of The Muscular System
United States

The muscular system in your body is composed of skeletal muscle, cardiac muscle and smooth muscle. Skeletal muscle attaches primarily to your skeleton and moves voluntarily or by reflex. Cardiac muscle is the muscle of your heart and contracts involuntarily. Finally, smooth muscle is found in your blood vessels, eyes, hair follicles and the walls of hollow organs like your stomach and intestines. The primary function of skeletal muscle is to p

InnerBody:  Endocrine System
United States

The hypothalamus is a part of the brain located superior and anterior to the brain stem and inferior to the thalamus. It serves many different functions in the nervous system, and is also responsible for the direct control of the endocrine system through the pituitary gland. The hypothalamus contains special cells called neurosecretory cells neurons that secrete hormones: Thyrotropin-releasing hormone (TRH) Growth hormone-releasing hormone (G

InnerBody: Nervous System
United States

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. The brain and spinal cord form the control center known as the central nervous system (CNS), where information is evaluated and decisions made. The sensory nerves and sense organs of the peripheral nerv

InnerBody:  Digestive System
United States

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract (GI tract).

InnerBody:  Respiratory System
United States

Interactive anatomy images and descriptions of the upper and lower respiratory tracts everything from the nasal passages to the lungs.