Got a tricky question? Receive an answer from students like you! Try us!

Contraction in Smooth Muscle Cells compared to Contraction in Skeletal Muscle Cells - Essay Example

Only on StudentShare
Author : chelseykuhn

Summary

Introduction: Locomotion is one of the most important signs of life, and along with the ability to use coordinated movement through the action of skeletal muscles, each animal also uses smooth muscles for different physiological functions. In human beings almost 50%1 of the body mass is comprised of skeletal muscles, most of which are connected to the skeleton through tendons…

Extract of sample
Contraction in Smooth Muscle Cells compared to Contraction in Skeletal Muscle Cells

In this assignment, based on studies, a comparison has been drawn between the contractions of these two types muscles at the cellular and molecular levels. Before going into this discussion, contraction must be defined. Contraction is defined by activation of the muscle fibers with a demonstrable shortening of the muscle fibers2. The physiological events in relation to muscle contraction have been delineated in great detail, and they reveal that basically, with neural stimulation there occurs a series of molecular events initiated by increase in the cytosolic calcium concentration. In this assignment, these events will be looked at in a greater detail to compare these events between the striated and nonstriated muscles.
Each skeletal muscle is made up of a large number of skeletal muscle fibers, which are thin cylindrical multinucleated cells of variable length, which in turn are made up of myofibrils, which are bundles of filamentous structures running along the length of the fiber. While observing skeletal- or cardiac smooth muscle fibers through microscope, a series of light and dark bands perpendicular to the long axis of the fiber are very conspicuous. ...
Download paper

Related Essays

Prokaryotic and Eukaryotic Cells
4). While prokaryotes are single-celled, most eukaryotes are multi-celled which influences the cells mobility and defines their function. The simplicity and specialization of the prokaryotic cells and the complexity of the multi-celled structure of the eukaryotic cells limit and allow for the unique functions of each classification.…
2 pages (502 words)
Stem Cells
Most other cells in our bodies are capable of either no replication at all, or only limited multiplication. Stem cells however can continue to replicate mitotically in an endless series of cell divisions in which a single progenitor call can give rise to populations of several million cells.…
5 pages (1255 words)
Muscle Strength Assessment
Consider that the minute diameter afferent impacts efferents, hence, sensitivity of the muscle spindle and likely resulting to proprioceptive acuity that may not be attributed to the exhausted muscle. This could take place in different areas in the exercise region and likewise, contra laterally (Pedersen, 1999). Though, it is claimant that the clinicians must delay the process of the joint position sense evaluation because of the fatigue state, unless the assessment of the proprioceptive effects of fatigue is deliberate, it shows that there were no report about the presumptive effects of…
5 pages (1255 words)
Actin-based cell motility: myofibril contraction
Muscle contraction is a very important physiological behavior to human. All physical movement for example lifting arms, swallowing food, heart beating involved muscles contraction. The mechanism of muscle contraction is studied by a lot of researchers.However, the most widely accepted theory was the “filament sliding model” proposed by Huxley and Niedergerke (1954), and Huxley and Hanson (1954). A skeletal muscle is made up of subunits called the fasicles. Fasicles are bundles of elongated muscle fibers which extend for the length of the muscle. The muscle fiber is segmented into distinct…
5 pages (1255 words)
muscle movement
ment to the muscles and many sets of muscles in the body work together in conjunction with each other in the form of various types of levers to bring about movement as a whole process.…
3 pages (753 words)