Compare and contrast the three types of muscles, namely, skeletal, smooth and cardiac? A. We can consciously control skeletal muscle but not smooth muscles. Smooth muscles contracts slowly, whereas skeletal muscles contains both slow-twitch and fast twitch bundles. Cardiac muscle is found only in the heart, the other can be found throughout the body.
[TYPE THE COMPANY NAME] DIFFERENCE BETWEEN THREE MUSCLE TYPES SKELETOL, SMOOTH AND CARDIAC MUSCLE ... GAOLATLHE THABISO KWENAMORE 24 SEPTEMBER 201101827 BIO 231 INTRODUCTION Muscles are multicellular contractile units. They are divided into three types which are skeletal muscle, smooth muscle and cardiac muscle and classification is done according to their structure, location and their function (Tortora and Derrickson,2011). Skeletal muscle is mainly responsible for the movement of the skeleton, but is also found in organs such as the globe of the eye and the tongue. It is a voluntary muscle, and therefore under conscious control, skeletal muscle is specialized for rapid and forceful contraction of short duration (Bevan et al,1996). In describing the cellular components of skeletal muscle, several specialized terms are used such as the plasma membrane of skeletal muscle is called the sarcolemma; its cytoplasm is known as sarcoplasm; the endoplasmic reticulum is called the sarcoplasmic reticulum.
Neither the heart nor the lungs would be able to function without one another. The Cardiovascular System consists of the heart and blood vessels. The heart is a hollow cone-shaped blood vessel that serves as a pump to circulate blood throughout our bodies. The heart is surrounded by the pericardium which holds the heart in place and doesn’t allow it to move from position in the mediastinum, but allows it enough room to be able to contract forcefully when needed (Tortora). The pericardium consist of two parts, the first part is the fibrous pericardium and the serous pericardium.
Brock Perry HPE295 Grier Gatlin Muscle Fibers Our body is composed of many different groups of muscles and each person has a unique composition of muscle tissue in their body. Different types of athletes usually have one predominant type of muscle fiber, that being the kind that suits their sport the best. Each one has it's own characteristics and is suited to a particular type of movement. Another way to classify these fiber types is by their contractile and metabolic properties, thereby dividing them into slow and fast twitch fibers. The first type of fiber we will look at is the type I, or slow twitch fibers.
So our assumed little blood cell is passing through one of the vena cavas, it doesn't matter which one it passes through. This is because both of the vena cavas spill into one of the top chambers of the heart, known as the right atrium. The right atrium is a thin walled chamber, just a little smaller than a golf ball, and slightly larger than a ping pong ball. Interestingly, it is in the cells of the right atrium that the electrical signals are generated which control the heartbeat. When the right atrium contracts, it pushes the blood cells through a valve which leads to another chamber in the heart.
The Renin-Angiotensin System Renin is synthesized and stored in an inactive form called prorenin in the juxtaglomerular cells of the kidneys. These cells are modified smooth muscle cells located in the walls of the afferent arterioles. When the arterial pressure falls, intrinsic reactions in the kidneys themselves cause many of the prorenin molecules in the JG cells to split and release renin. Most of the renin enters the renal blood and then passes out of the kidneys to circulate throughout the entire body .
The blood vessel walls contain the force exerted by the heart, pushing back on the blood and providing it only one avenue of forward movement; through the circulatory system in a continual loop or circle, hence the name circulatory system. Now that you have an idea about
Motion allows the human body to walk, run, and perform localized movements. Localized movements are simple movements such as, texting or waving. Movement of substances through the body depend on contractions from cardiac, skeletal, and smooth muscle tissue to move blood through the heart and blood vessels, food through the gastrointestinal tract, sperm and ova through the reproductive system, and urine through the urinary system. Skeletal body positions and regulating organ volume depend on contractions from different muscle tissue to maintain the body in stable positions, sitting or standing. Sustained contractions from postural muscles take place always when a person is awake.
Main tissues in the body There are four different types of tissue in the body, these are muscle, connective, nervous and epithelial; and for each type of tissue there are several sub-categories. In this essay I am going to describe the function of each type of tissue and the sub-categories. Muscle The muscle tissue has three different sub-categories which are striated, non-striated and cardiac. The muscle tissue is made up of muscle fibres, which can shorten, contracting and then returning to the pervious shape, which is known as relaxing. These movements cause the blood and other materials like urine, faeces and food, soft tissue and skeleton to move.
Tissues and Tattoos The four types of tissue are epithelia, connective tissue, muscle tissue and neural tissue. They are all different but all serve a general purpose to cover, fill and protect what is underneath. Epithelia cover exposed surfaces, line internal passageways, chambers and produce glandular secretions. Connective tissues are responsible for filling internal spaces, provide structural support and store energy. Muscle tissue contract to produce active movement.