Human Body Systems

Smooth Muscles MCQs with Answers

Welcome to the Smooth Muscles MCQs with Answers. In this post, we have shared Smooth Muscles Online Test for different competitive exams. Find practice Smooth Muscles Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Smooth Muscles.

Smooth muscles are involuntary muscles found in various organs and tissues throughout the body, such as the digestive tract, blood vessels, and reproductive organs. Unlike skeletal muscles, which are under conscious control, smooth muscles contract involuntarily to perform essential functions like digestion, regulating blood flow, and controlling organ movements.

Maintaining healthy smooth muscles is crucial for the proper functioning of organs and bodily processes. A balanced diet rich in fiber, fruits, and vegetables supports digestive smooth muscle function and promotes gastrointestinal health. Regular physical activity and stress management techniques help maintain smooth muscle tone and function.

Smooth Muscles Online Quiz

By presenting 3 options to choose from, Smooth Muscles Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Smooth Muscles Questions and Answers and click over the correct answer.

  • Test Name: Smooth Muscles MCQ Quiz Practice
  • Type: Quiz Test
  • Total Questions: 40
  • Total Marks: 40
  • Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quiz, simply click on question and comment below that question, so that we can update the answer in the quiz section.

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Smooth Muscles MCQs

Smooth Muscles

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1 / 40

Smooth muscle contraction is regulated by the release of which ion?

2 / 40

Smooth muscles contract ____________ than skeletal muscles.

3 / 40

What is the main function of smooth muscles in the respiratory system?

4 / 40

Which neurotransmitter inhibits smooth muscle contraction in blood vessels?

5 / 40

Smooth muscle contraction is regulated by which division of the autonomic nervous system?

6 / 40

Smooth muscle contraction is primarily regulated by changes in ____________ concentration.

7 / 40

Which enzyme is responsible for the phosphorylation of myosin in smooth muscle contraction?

8 / 40

Where are smooth muscles primarily found in the body?

9 / 40

Smooth muscle contraction is initiated by an increase in ____________ concentration inside the cell.

10 / 40

Smooth muscles in the urinary bladder contract during which process?

11 / 40

Which neurotransmitter stimulates smooth muscle contraction in blood vessels?

12 / 40

Which type of muscle tissue is found in the walls of blood vessels?

13 / 40

What is the primary function of smooth muscles in the skin?

14 / 40

What is the term for the involuntary contraction and relaxation of smooth muscles in the walls of hollow organs?

15 / 40

Which hormone stimulates smooth muscle contraction in the uterus during childbirth?

16 / 40

Smooth muscles in the ____________ help regulate the flow of urine.

17 / 40

Which ion plays a crucial role in triggering smooth muscle contraction?

18 / 40

Smooth muscles are found in the ____________ and play a role in regulating blood flow.

19 / 40

What is the term for the coordinated wave-like contractions of smooth muscles in the digestive tract?

20 / 40

Smooth muscles are also known as ____________ muscles.

21 / 40

Which enzyme breaks down ATP to provide energy for smooth muscle contraction?

22 / 40

What is the term for the dense bodies that anchor thin filaments in smooth muscle cells?

23 / 40

Smooth muscles in the ____________ control the size of the pupils.

24 / 40

Smooth muscles in the ____________ help regulate blood pressure.

25 / 40

Smooth muscle contraction is controlled by the release of ____________ from the sarcoplasmic reticulum.

26 / 40

Smooth muscles in the ____________ regulate the diameter of blood vessels.

27 / 40

Smooth muscle cells have a ____________ shape compared to skeletal muscle cells.

28 / 40

Smooth muscle cells have a higher ratio of ____________ to myosin compared to skeletal muscles.

29 / 40

Smooth muscles contract in response to an increase in ____________ ions.

30 / 40

Smooth muscle cells are connected by ____________ junctions.

31 / 40

What is the term for the ability of smooth muscle cells to contract without external stimulation?

32 / 40

Which type of muscle tissue is involuntary and lacks striations?

33 / 40

What is the term for the slow, sustained contraction of smooth muscles in response to a stimulus?

34 / 40

Smooth muscles in the ____________ help move food through the digestive system.

35 / 40

Smooth muscles are controlled by the ____________ nervous system.

36 / 40

Smooth muscle cells contract in response to the binding of ____________ to receptors on their surface.

37 / 40

Smooth muscles lack ____________, which gives them a smooth appearance under a microscope.

38 / 40

Smooth muscles in the gastrointestinal tract assist in ____________.

39 / 40

Smooth muscle cells lack a well-developed ____________ system.

40 / 40

Which structure in smooth muscle cells allows for the rapid spread of electrical signals?

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Smooth Muscles Flashcards

Smooth muscles are also known as ____________ muscles.

Involuntary

Which type of muscle tissue is found in the walls of blood vessels?

Smooth muscle

Smooth muscles are controlled by the ____________ nervous system.

Autonomic

Smooth muscles lack ____________, which gives them a smooth appearance under a microscope.

Striations

Where are smooth muscles primarily found in the body?

Hollow organs

Smooth muscle contraction is regulated by the release of which ion?

Calcium

What is the term for the dense bodies that anchor thin filaments in smooth muscle cells?

Dense plaques

Smooth muscles contract ____________ than skeletal muscles.

Slower

Which neurotransmitter stimulates smooth muscle contraction in blood vessels?

Norepinephrine

What is the term for the involuntary contraction and relaxation of smooth muscles in the walls of hollow organs?

Peristalsis

Smooth muscles in the gastrointestinal tract assist in ____________.

Digestion

Smooth muscles contract in response to an increase in ____________ ions.

Calcium

What is the main function of smooth muscles in the respiratory system?

Control airway diameter

Smooth muscles are found in the ____________ and play a role in regulating blood flow.

Blood vessels

Smooth muscle cells have a ____________ shape compared to skeletal muscle cells.

Spindle

Which enzyme is responsible for the phosphorylation of myosin in smooth muscle contraction?

Myosin light-chain kinase

Smooth muscle contraction is regulated by which division of the autonomic nervous system?

Sympathetic

Smooth muscles in the urinary bladder contract during which process?

Urination

Smooth muscle contraction is controlled by the release of ____________ from the sarcoplasmic reticulum.

Calcium ions

What is the term for the slow, sustained contraction of smooth muscles in response to a stimulus?

Tonic contraction

Smooth muscle cells lack a well-developed ____________ system.

Sarcomere

Which hormone stimulates smooth muscle contraction in the uterus during childbirth?

Oxytocin

Smooth muscles in the ____________ regulate the diameter of blood vessels.

Arteries

Smooth muscles in the ____________ help move food through the digestive system.

Intestines

Which ion plays a crucial role in triggering smooth muscle contraction?

Calcium

Smooth muscles in the ____________ control the size of the pupils.

Iris

Smooth muscle cells are connected by ____________ junctions.

Gap

Which type of muscle tissue is involuntary and lacks striations?

Smooth muscle

Smooth muscle contraction is initiated by an increase in ____________ concentration inside the cell.

Calcium

What is the term for the ability of smooth muscle cells to contract without external stimulation?

Myogenic

Which neurotransmitter inhibits smooth muscle contraction in blood vessels?

Nitric oxide

Smooth muscles in the ____________ help regulate the flow of urine.

Bladder

Smooth muscle contraction is primarily regulated by changes in ____________ concentration.

Calcium

What is the primary function of smooth muscles in the skin?

Control hair follicles

Smooth muscle cells contract in response to the binding of ____________ to receptors on their surface.

Neurotransmitters

Which enzyme breaks down ATP to provide energy for smooth muscle contraction?

ATPase

Smooth muscles in the ____________ help regulate blood pressure.

Arteries

Which structure in smooth muscle cells allows for the rapid spread of electrical signals?

Gap junctions

What is the term for the coordinated wave-like contractions of smooth muscles in the digestive tract?

Peristalsis

Smooth muscle cells have a higher ratio of ____________ to myosin compared to skeletal muscles.

Actin

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