Question

16. Muscles utilized for controlling the
flow of all substances within lumen
are grouped as
O a hormonal system
O b.skeletal system
ОООО
O c. cardiac muscles
d smooth muscles​

Answer 1

Answer:

C. CARDIAC MUSCLES

There are three types of muscles—cardiac, skeletal, and smooth. Smooth muscles are used to control the flow of substances within the lumens of hollow organs, and are not consciously controlled. Skeletal and cardiac muscles have striations that are visible under a microscope due to the components within their cells.

Explanation:

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Answer 2

Option d) smooth muscles​

Muscles utilized for controlling the flow of all substances within lumen

are grouped as Smooth muscles​.

• Unconsciously regulated smooth muscles are employed to regulate material flow within the lumens of hollow organs. Due to the elements in their cells, the striations in skeletal and cardiac muscles can be seen under a microscope.
• The walls of hollow internal organs like blood vessels, the gastrointestinal tract, the bladder, and the uterus are made of smooth muscle, which is controlled by the autonomic nervous system. Since smooth muscle cannot be actively directed by the mind, it acts involuntarily.
• In the cardiovascular system, smooth muscle is used in vessels to maintain blood pressure and flow; in the respiratory system, it opens and closes airways; in the gastrointestinal system, it contributes to motility and nutrition absorption; and yet it still has functions in nearly every other organ system.
• Visceral muscles are smooth muscles that are present in the inside, or visceral, organs. They are unwilling. They are known as non-striated or non-striped muscles because they lack striations.

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