Muscle

Q.

The muscles which never fatigue are

1. Striated

2. Smooth

3. Cardiac

4. None of these

Q.

Regarding Assertion [A] and Reason [R], choose the correct option.

Assertion [A] : Muscles can only pull on structures not push.
Reason [R] : Skeletal muscles are often arranged in pairs that pull bones in opposite directions.

1. Assertion [A] is True and Reason [R] is False.

2. Reason [R] is True and Assertion [A] is False.

3. Assertion [A] is True and Reason [R] is True and is a correct explanation to [A].

4. Assertion [A] is True and Reason [R] is True but is not a correct explanation to [A].

Q.

A person met with an accident in which two long bones of hand were dislocated. Which among the following may be the possible reason?

1. Tendon break

2. Break of skeletal muscle

3. Ligament break

4. Areolar tissue break

Q. Give 2 Examples of antagonistic muscles.

Q.

A muscle can both pull and push.

1. Push only

2. Pull only

Q.

Heart beating and breathing is controlled by

1. Cerebrum

2. Spinal cord

3. Medulla oblongata

4. Cerebellum

Q.

Muscles of the iris of the eye are of voluntary type.

1. True
2. False

Q.

Define the term stimulus.

Q.

The disease _______ affects the central nervous system.

Q.

___ muscles bring about opposite movements of the parts concerned.

Q. All striated muscles are involuntary in nature.

1. True
2. False

Q.

The movable end of a muscle is drawn out in the form of a tough structure called Tendon.

1. True
2. False

Q. Japanese encephalitis is caused by .

1. Food
2. Virus
3. Bacteria
4. Protozoa

Q. Give 2 Examples of antagonistic muscles.

Q. Which of the following are characteristics of skeletal or voluntary muscle?

1. Cylindrical
2. Striations
3. Branched
4. Multinucleated

Q.

Pick the correct description for what happens in the body when we do some physical activity like running or working with your hands.

(a) Smooth muscles contract and pull the ligament to move the bones
(b) Smooth muscles contract and pull the tendons to move the bones
(c) Skeletal muscles contract and pull the ligament to move the bones
(d) Skeletal muscles contract and pull the tendon to move the bones

Q. The muscles become shorter and thicker because of ________.

1. contraction
2. relaxation
3. extension
4. tearing

Q. Do the muscles pull the structures, or push them? Explain briefly. <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> [Review Questions - Pg No.126 - SAQ - 2]

Q. Actinoids contraction is greater from element to element than lamthanoid contraction?

Q. An example of unstriated muscles which are entirely involuntary are located

1. In pylorus
2. In diaphragm
3. In eyelids
4. At base of external ear

Q.

Assertion [A]: Muscles have the capability to move

Reason [R]: It is due to their ability to contract and relax

1. [A] is true and [R] is false
2. [A] is false and [R] is true
3. Both [A] and [R] are true and [R] explains [A]
4. Both [A] and [R] are true and [R] does not explain [A]

Q.

Which of the following is one of the primary functions of muscle tissue?

1. regeneration of mass

2. heat production

3. growth

4. the ability to last forever

Q. Which of the following organs is affected by SARS virus?

1. Heart
2. Kidney
3. Lungs
4. Stomach

Q. The connective tissue membrane, that binds many fasiculi into a muscle is called as

1. Sarcolemma
2. Perimysium
3. Epimysium
4. Endomysium

Q. Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

1. Biceps of upper arm- Smooth muscle fibres
2. Heart wall- involuntary unstriated muscle
3. Abdominal wall- Smooth muscle
4. Iris- Involuntary smooth muscle

Q. The muscles that move upon our will are called muscles.

1. involuntary
2. voluntary
3. cardiac

Q.

Regarding Assertion [A] and Reason [R], choose the correct option.

Assertion [A] : Muscles can only pull on structures not push.
Reason [R] : Skeletal muscles are often arranged in pairs that pull bones in opposite directions.

1. Assertion [A] is True and Reason [R] is False.

2. Reason [R] is True and Assertion [A] is False.

3. Assertion [A] is True and Reason [R] is True and is a correct explanation to [A].

4. Assertion [A] is True and Reason [R] is True but is not a correct explanation to [A].

Q. Which tissue connects bones and muscles in our body?

1. Ligament
2. Blood
3. Tendon
4. Cartilage

Q.

Light is

1. Stimulus

2. object

3. reflex

4. action

Q. Select the stimulus to which an organism responds to.