Muscle Tissue - cardiac muscle cells meet, they form an...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Muscle Tissue There are three kinds of muscle tissues (see Figure 1): class="bullet"> •    Skeletal muscle  consists of long cylindrical cells that, under a microscope, appear  striated with bands perpendicular to the length of the cell. The many nuclei in each cell  (multinucleated cells) are located near the outside along the plasma membrane, which  is called the sarcolemma. Skeletal muscle is attached to bones and causes movements  of the body. Because it is under conscious control, it is also called  voluntary muscle. •    Cardiac muscle,  like skeletal muscle, is striated. However, cardiac muscle cells have  a single, centrally located nucleus, and the muscle fibers branch often. Where two 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: cardiac muscle cells meet, they form an intercalated disc containing gap junctions, which bridge the two cells. Cardiac cells are the only cells that pulsate in rhythm. Smooth muscle consists of cells with a single, centrally located nucleus. The cells are elongated with tapered ends and do not appear striated. Smooth muscle lines the walls of blood vessels and certain organs such as the digestive and urogenital tracts, where it serves to advance the movement of substances. Smooth muscle is called involuntary muscle because it is not under direct conscious control. Figure 1. Three kinds of muscle tissue exist: skeletal muscle, cardiac muscle, and smooth muscle....
View Full Document

This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

Page1 / 2

Muscle Tissue - cardiac muscle cells meet, they form an...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online