Jan 14, 2021 · Slides: What is the relationship between structure and function in the selected muscle? (see page 3 of the lesson) Muscle - Human Cardiac Pumps blood throughout the body Intestines - Outer Wall Detail (smooth muscle) Makes up organ lining Slide 1: Muscle- Skeletal Longitudinal Section and Slide 2: Muscle-Skeletal Cross Section Stimuli from nerves for …
Jan 22, 2017 · 13) A) Under normal resting conditions, cardiac muscle tissue contracts and relaxes about 75 times per minute. B)Cardiac muscle fibers can use lactic acid to make ATP. C)Cardiac muscle fibers depend mostly on anaerobic cellular respiration to generate ATP. D)Cardiac muscle contracts when stimulated by its own autorhythmic muscle cells.
Jun 03, 2021 · A. Smooth muscles - The cells are tapered and have one nucleus. B. Smooth muscles - Enables arteries to constrict or dilate to maintain blood pressure. C. Skeletal muscles - produces a significant amount of body heat. D. Cardiac muscles - Forms the walls of the chambers of the heart; its function is to pump blood.
Muscle Cells: - The elongated shape of the muscle cells is responsible for their function. The elongated shape allows the proteins to form an overlapping pattern and make the muscle cells as flexible as possible. Blood Cells: - Most of the blood cells are compact and have smaller sizes so that they can easily pass through tight capillaries.
The following is not a major function of muscle tissue: c) storage of information. The main function of muscle tissue is the body is movement, both...
The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.
Muscle tissue is classified into three types according to structure and function: skeletal, cardiac, and smooth (Table 4.2). Skeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body.
Skeletal muscle fibers are long, multinucleated cells. The membrane of the cell is the sarcolemma; the cytoplasm of the cell is the sarcoplasm. The sarcoplasmic reticulum (SR) is a form of endoplasmic reticulum. Muscle fibers are composed of myofibrils which are composed of sarcomeres linked in series.
Skeletal muscle, smooth muscle and cardiac muscle are the three different kinds of muscular tissues present around bones of our body, around the alimentary canal and heart wall respectively. So, the correct option is 'None of the above'.
Muscle fibers contain the major organelles present in most cells. The most striking difference between muscle cells and the majority of other cells is their multinucleated nature. Depending on its size, an individual fiber may contain hundreds of nuclei.
The three main types of muscle include:Skeletal muscle – the specialised tissue that is attached to bones and allows movement. ... Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries. ... Cardiac muscle – the muscle specific to the heart.
Muscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts.
Overview. There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).May 25, 2021
A muscle cell, known technically as a myocyte, is a specialized animal cell which can shorten its length using a series of motor proteins specially arranged within the cell. While several associated proteins help, actin and myosin form thick and thin filaments which slide past each other to contract small units of a muscle cell. These units are called sarcomeres, and many of them run end-to-end within a larger fiber called a myofibril. A single muscle cell contains many nuclei, which are pressed against the cell membrane. A muscle cell is a long cell compared to other forms of cells, and many muscle cells connect together to form the long fibers found in muscle tissue.
Structure of a Muscle Cell. As seen in the image below, a muscle cell is a compact bundle of many myofibrils. Each myofibril is made of many sarcomeres bundled together and attached end-to-end. A specialized form of the endoplasmic reticulum, known as the sarcoplasmic reticulum, extends in and around these myofibril bundles.
This allows the myosin heads to attach to the actin filament. Once this happens, myosin can used the energy gained from ATP to crawl along the actin filament. When many sarcomeres are doing this at the same time, the entire muscle contract.
Each sarcomere is made primarily from thick and thin filaments. Thick filaments are made from repeating units of a protein known as myosin. Myosin has small heads on it which can bind to an actin filament. Repeating units of the protein actin make up the thin filament.
Repeating units of the protein actin make up the thin filament. Actin is supported by a number of accessory proteins which give the strands stability and allow the muscle to be controlled by nerve impulses. The actin filaments are supported on each end by specialized proteins.
Another large protein, titin, connects the Z plates together and prevents the sarcomere from being overstretched when it is not contracting. These proteins cannot be seen in the image below. Actin is covered by two additional proteins, troponin and tropomyosin.
Mitochondria are densely packed throughout muscle cells, to provide a constant flow of ATP. The entire cell is covered in a specialized cell membrane known as the sarcolemma. The sarcolemma has special opening which allow nerve impulses to be passed into transverse tubules. Below is a blown up view of each sarcomere.