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Can you see sarcomeres in smooth muscle?
No, sarcomeres are not visible in smooth muscle. Smooth muscle lacks the organized sarcomere structure found in striated muscle, such as skeletal and cardiac muscle. Instead, smooth muscle has a more scattered arrangement of contractile proteins.
Does the trachea have skeletal muscle?
No, the trachea does not have skeletal muscle. Instead, it is composed of smooth muscle, cartilage, and connective tissue. Smooth muscle allows for involuntary control of the trachea's diameter and airflow.
How does the contraction mechanism of smooth muscle compare to that of skeletal muscle and cardiac muscle?
Smooth muscle, skeletal muscle, and cardiac muscle all contract in response to signals from the nervous system or hormones. However, the contraction mechanism of smooth muscle is different from that of skeletal and cardiac muscle. Smooth muscle contracts more slowly and can sustain contractions for longer periods of time compared to skeletal and cardiac muscle. Additionally, smooth muscle does not have striations like skeletal and cardiac muscle, which gives it a more uniform appearance.
What has the thickest tunica media?
Large elastic arteries, such as the aorta and pulmonary trunk, have the thickest tunica media. This layer is predominantly composed of smooth muscle cells and elastic fibers, allowing these arteries to expand and recoil in response to changes in blood flow and pressure.
What are the key differences in the structure and function between smooth muscle and cardiac muscle?
Smooth muscle is found in the walls of internal organs and blood vessels, while cardiac muscle is found in the heart. Smooth muscle is involuntary and under autonomic control, while cardiac muscle is also involuntary but has its own specialized conduction system. Smooth muscle cells are spindle-shaped and have a single nucleus, while cardiac muscle cells are branched and have one or two nuclei. Smooth muscle contracts slowly and rhythmically, while cardiac muscle contracts quickly and continuously.
What layer of an artery consists mostly of smooth muscle?
Arterial walls are more muscular than the walls of veins. This muscle is smooth involuntary muscle.
What are the characteristics of a muscular vein?
The tunica interna of a muscular vein consists of an endothelium with a basal lamina, a thin subendothelial layer with smooth muscle cells, and a thin internal elastic membrane. Its tunica media has several layers of circularly arranged smooth muscle cells dispersed with collagen and elastic fibres. The smooth muscle cells may be arranged longitudinally in its tunica media. Its externa is generally thicker than its tunica media and has collagen fibres and a network of elastic fibres.
What is the layer in the wall of an artery that helps maintain blood pressure?
smooth muscle and elastic connective tissue
What are the characteristics of elastic arteries?
The tunica interna of an elastic artery has subendothelial laminas of elastic fibres. Its tunica media has many fenestrated elastic membranes alternating with smooth muscle fibres. An elastic artery also has external elastic lamina. Its tunica externa is thin and contains vasa vasorum.
Which of the following is a difference between arteries and veins?
artery walls have more elastic tissue and smooth muscle than veins,
What is a vessel with a thick layer of smooth muscle and elastic fibers that allow for expansion?
An artery is a vessel with a thick medial layer, consisting of smooth muscle to allow for constriction or dilation in order to control blood flow through the vessel.
What is the muscle that is found in the small intestine?
smooth musclesmooth muscle
Is an ulcer a cardiac muscle or a smooth muscle?
Smooth muscle
The main component of the tunica media of muscular arteries is?
Tunica Media or just Media is the central layer of arteries or veins. In the artery, it is composed of elastic tissue and smooth cell muscles.
What layer of an artery consists mostly of smooth muscles?
the tunica media is made of smooth muscles and elastic fibers.
Which muscle tissue is involuntary and not striated?
SmoothI'm POSITIVE it's the Skeletal Muscle!
Is voluntary muscle smooth muscle?
yes it is.....
