HBS1HBB Lecture Notes - Lecture 3: Smooth Muscle Tissue, Skeletal Muscle, Myocyte
Document Summary
Skeletal and smooth muscle cells (but not cardiac muscle cells) are elongated, and are called muscle fibres. Whenever you see the prefixes myo or mys (both are word roots meaning muscle ) or sarco (flesh), the reference is to muscle. characteristics. > highly cellular many cells arranged together to form a functional unit of muscle. > highly vascular have a high blood supply. > contractile ability to contract/ cause movement in response to stimuli. > unitary muscle in walls of hollow visceral organs (other than heart) > multi-unit muscles in intrinsic eye muscle, airways, large arteries. > made up of many uni-nuclear cells, a single nucleus, does not have any stripes, do not have a very well organised contractile apparatus, means they can only contract very slowly, no conscious control. >smooth muscle tissue is found in the walls of hollow visceral organs, such as the stomach, urinary bladder, and respiratory passages.
