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We would expect to find smooth muscle in all of the following EXCEPT:
- a)Pulmonary circulatory tissue
- b)Esophagus
- c)Small intestine
- d)Myocardial tissue
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
We would expect to find smooth muscle in all of the following EXCEPT:a...
Smooth muscle is not found in myocardial tissue. Myocardial tissue, also known as cardiac muscle tissue, is a specialized type of muscle found only in the heart. It is composed of striated muscle fibers, similar to skeletal muscle, but with unique characteristics that allow for coordinated and rhythmic contractions to pump blood. Smooth muscle, on the other hand, is found in the walls of various organs and structures throughout the body, including the pulmonary circulatory tissue, esophagus, and small intestine. It is responsible for involuntary movements and contractions in these organs, such as peristalsis in the digestive system and regulation of blood vessel diameter in the circulatory system.
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We would expect to find smooth muscle in all of the following EXCEPT:a...
Smooth Muscle
Smooth muscle is one of the three types of muscle tissue found in the human body, along with skeletal muscle and cardiac muscle. It is responsible for involuntary movements and is found in various organs and tissues throughout the body. Smooth muscle cells are elongated and spindle-shaped, with a single central nucleus. Unlike skeletal muscle, smooth muscle does not have striations or a regular arrangement of sarcomeres.
Location of Smooth Muscle
Smooth muscle is found in several organs and tissues in the body, including:
1. Pulmonary circulatory tissue: Smooth muscle is present in the walls of blood vessels that supply the lungs, including the pulmonary arteries and veins. The contraction and relaxation of smooth muscle in these blood vessels help regulate blood flow and pressure in the pulmonary circulation.
2. Esophagus: The esophagus is a muscular tube that connects the throat to the stomach. Smooth muscle is present in the walls of the esophagus, allowing it to contract and propel food from the throat to the stomach during the process of swallowing.
3. Small intestine: Smooth muscle is abundant in the walls of the small intestine. The contraction of smooth muscle in the intestinal walls helps to mix and propel food along the digestive tract, facilitating the process of digestion and absorption of nutrients.
Myocardial Tissue
Myocardial tissue refers to the muscular tissue of the heart, specifically the cardiac muscle. Unlike smooth muscle, cardiac muscle has a striated appearance due to the presence of sarcomeres. It is responsible for the rhythmic contractions of the heart, which pump blood throughout the body. Cardiac muscle is involuntary, meaning it contracts without conscious control.
Explanation of the Correct Answer
The correct answer is option D, myocardial tissue. This is because myocardial tissue refers to the cardiac muscle of the heart, which is a specialized type of muscle tissue different from smooth muscle. While smooth muscle is present in various organs and tissues throughout the body, including the pulmonary circulatory tissue, esophagus, and small intestine, it is not found in the myocardial tissue of the heart.
In summary, smooth muscle is found in the walls of blood vessels, the esophagus, and the small intestine, but it is not present in the myocardial tissue of the heart.
Smooth muscle is one of the three types of muscle tissue found in the human body, along with skeletal muscle and cardiac muscle. It is responsible for involuntary movements and is found in various organs and tissues throughout the body. Smooth muscle cells are elongated and spindle-shaped, with a single central nucleus. Unlike skeletal muscle, smooth muscle does not have striations or a regular arrangement of sarcomeres.
Location of Smooth Muscle
Smooth muscle is found in several organs and tissues in the body, including:
1. Pulmonary circulatory tissue: Smooth muscle is present in the walls of blood vessels that supply the lungs, including the pulmonary arteries and veins. The contraction and relaxation of smooth muscle in these blood vessels help regulate blood flow and pressure in the pulmonary circulation.
2. Esophagus: The esophagus is a muscular tube that connects the throat to the stomach. Smooth muscle is present in the walls of the esophagus, allowing it to contract and propel food from the throat to the stomach during the process of swallowing.
3. Small intestine: Smooth muscle is abundant in the walls of the small intestine. The contraction of smooth muscle in the intestinal walls helps to mix and propel food along the digestive tract, facilitating the process of digestion and absorption of nutrients.
Myocardial Tissue
Myocardial tissue refers to the muscular tissue of the heart, specifically the cardiac muscle. Unlike smooth muscle, cardiac muscle has a striated appearance due to the presence of sarcomeres. It is responsible for the rhythmic contractions of the heart, which pump blood throughout the body. Cardiac muscle is involuntary, meaning it contracts without conscious control.
Explanation of the Correct Answer
The correct answer is option D, myocardial tissue. This is because myocardial tissue refers to the cardiac muscle of the heart, which is a specialized type of muscle tissue different from smooth muscle. While smooth muscle is present in various organs and tissues throughout the body, including the pulmonary circulatory tissue, esophagus, and small intestine, it is not found in the myocardial tissue of the heart.
In summary, smooth muscle is found in the walls of blood vessels, the esophagus, and the small intestine, but it is not present in the myocardial tissue of the heart.
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We would expect to find smooth muscle in all of the following EXCEPT:a)Pulmonary circulatory tissueb)Esophagusc)Small intestined)Myocardial tissueCorrect answer is option 'D'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about We would expect to find smooth muscle in all of the following EXCEPT:a)Pulmonary circulatory tissueb)Esophagusc)Small intestined)Myocardial tissueCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for We would expect to find smooth muscle in all of the following EXCEPT:a)Pulmonary circulatory tissueb)Esophagusc)Small intestined)Myocardial tissueCorrect answer is option 'D'. Can you explain this answer?.
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