Cardiac Muscles

Q.

Differentiate between striated (Skeletal Muscles), unstriated (Smooth Muscles), and cardiac muscles based on their structure and site/location in the body.

Q. Which of the following is not the characteristic of cardiac muscles?

1. Branched
2. Multinucleated
3. Striated
4. Involuntary

Q.

Question 3
Give three features of cardiac muscles.

Q.

What difference between types of muscle fibers in humans?

Q. Which type of muscles are cylindrical, branched and uninucleate?

1. Striated muscle
2. Non-striated muscle
3. Cardiac muscle
4. Skeletal muscle

Q.

What is the specific function of the cardiac muscle?

Q.

Cardiac muscle is :
(a) Involuntary
(b) Smooth
(c) Striated
(d) Involuntary and Striated.

Q. Which among the following is not a characteristic of cardiac muscle?

1. Branched

2. Multinucleated

3. Cylindrical

4. Involuntary

Q.

Question 8
Which of the following types of muscle are involuntary?
(i) Striated muscle
(ii) Smooth muscle
(iii) Cardiac muscle
(iv) Skeletal muscle

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

Q. Why skeletal muscles are called straighted muscles?

Q. Why involuntary muscles are called smooth muscles?

Q.

How are the striated muscles unbranched and cardiac muscles branched ?

Q.

Name the muscle of heart.

Q.

Uninucleate characteristic is shared by

1. Cardiac and skeletal muscles

2. Skeletal and involuntary muscles

3. Skeletal and smooth muscles

4. Cardiac and smooth muscles

Q.

Name the muscle fibre which contains intercalated discs.

Q.

The muscular tissue which functions throughout the life continuously without fatigue is :

1. Skeletal muscle

2. Cardiac muscle

3. Smooth muscle

4. Voluntary muscle

Q. We learnt that heart is made up of cardiac muscles which are controlled by our brain. Then can we stop our heartbeat by commanding cardiac muscles to stop.

Q.

Enlist three types of muscles with their locations.

Q. Fill in the blanks.

$\begin{array}{cccc}& Skeletalmuscle& Smoothmuscle& Cardiacmuscle\\ Movementtype& i.\underset{–}{}& Involuntary& Involuntary\\ Structure& ii.\underset{–}{}& Longcellswith& iii.\underset{–}{}\\ & & pointedendsand& \\ & & uninucleate& \end{array}$

1. i - Voluntary, ii - Cylindrical, branched and uninucleated, iii - Long, cylindrical, unbranched and multinucleated
2. i - Involuntary, ii - Cylindrical, branched and uninucleated, iii - Long, cylindrical, unbranched and multinucleated
3. i - Involuntary, ii - Long, cylindrical, unbranched and multinucleated, iii - Cylindrical, branched and uninucleated.
4. i - Voluntary, ii - Long, cylindrical, unbranched and multinucleated, iii - Cylindrical, branched and uninucleated.

Q. The following are properties of cardiac muscles except:

1. Rhythmic contraction and relaxation throughout life
2. They are involuntary muscles
3. They are cylindrical, branched and uninucleate
4. None of the above

Q. Ciliary muscles are voluntary or involuntary and why ?

Q. Question 8
Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.

Q. Question 41
Differentiate between voluntary and involuntary muscles. Give one example of each type.

Q. Differentiate between striated, unstriated and Cardiac muscle on the basis of site in the body.

Q. The features of cardiac muscles are _________.

1. Spindle-shaped, uninucleate and involuntary
2. Unbranched, multinucleate and voluntary
3. Branched, uninucleate and involuntary
4. Cylindrical, multinucleate and voluntary

Q. Fill in the blank spaces

$\begin{array}{ccc}\text{Muscle Tissue}& \text{Organs}& \text{Features}\\ \text{Skeletal muscles}& \text{Limbs}& \text{(A)\_\_\_\_\_\_\_}\\ \text{Smooth Muscles}& \text{Intestine}& \text{(B) \_\_\_\_\_\_}\\ \text{Cardiac Muscles}& \text{(C)\_\_\_\_\_\_\_}& \text{Involuntary}\end{array}$

1. (A) Involuntary; (B) Voluntary (C) Tongue
2. (A) Involuntary; (B) Involuntary; (C) Heart
3. (A) Voluntary; (B) Involuntary; (C) Heart
4. (A) Voluntary; (B) Involuntary; (C) Lungs

Q. What is the difference between striated and unstriated muscles ?

Q. Which among the following is not a characteristic of cardiac muscle?

1. Branched

2. Multinucleated

3. Involuntary

4. Cylindrical

Q.

How will you identify cardiac muscle cells under a microscope? [2 MARK]

Q. Identify the type of muscle tissue based on these characteristics:
a) Present in the walls of the heart
b) They have branched fibres
c) Faint light and dark bands are seen

1. Smooth
2. Skeletal
3. Cardiac
4. Striated