Locomotion and Movement NCERT

Select the correct option.

Match the following columns and select the correct option.
\(
\begin{array}{|l|l|l|l|}
\hline & \text { Column-I } & & \text { Column-II } \\
\hline \text { (a) } & \begin{array}{l}
\text { Floating } \\
\text { Ribs }
\end{array} & \text { (i) } & \begin{array}{l}
\text { Located between second and } \\
\text { seventh ribs }
\end{array} \\
\hline \text { (b) } & \text { Acromion } & \text { (ii) } & \text { Head of the humerus } \\
\hline \text { (c) } & \text { Scapula } & \text { (iii) } & \text { Clavicle } \\
\hline \text { (d) } & \begin{array}{l}
\text { Glenoid } \\
\text { cavity }
\end{array} & \text { (iv) } & \text { Do not connect with the sternum } \\
\hline
\end{array}
\)
Options:
\(
\begin{array}{|l|l|l|l|l|}
\hline & \text { (a) } & \text { (b) } & \text { (c) } & \text { (d) } \\
\hline 1 . & \text { (i) } & \text { (iii) } & \text { (ii) } & \text { (iv) } \\
\hline 2 . & \text { (iii) } & \text { (ii) } & \text { (iv) } & \text { (i) } \\
\hline 3 . & \text { (iv) } & \text { (iii) } & \text { (i) } & \text { (ii) } \\
\hline 4 . & \text { (ii) } & \text { (iv) } & \text { (i) } & \text { (iii) } \\
\hline
\end{array}
\)

The clavicle articulates with:

Identify the correct statement regarding human ribs:

Select the correct statement regarding the specific disorder of muscular or skeletal system.

Which one of the following is the correct description of a certain part of a normal human skeleton?

Assertion: Smooth muscle is fundamentally different from skeletal muscle and cardiac muscle.
Reason: Smooth muscle is an involuntary non-striated muscle.

During muscular contraction, which of the following events occur?
(a) ‘H’ zone disappears
(b) ‘A’ band widens
(c) ‘I’ band reduces in width
(d) Myosin hydrolyzes ATP, releasing the ADP and \( \mathrm{P}_{\mathrm{i}} \)
(e) Z-lines attached to actins are pulled inwards
Choose the correct answer from the options given below.

Immediately after the motor neuron passes an impulse to a muscle fiber:

Which of the following movements can be seen in a human body?
I. Amoeboid
II. Ciliary
III. Flagellar

With respect to the red muscle fibers [Type I], the white muscle fibers [Type II] are richer in:

During muscle contraction, the part that does not get shortened in length is labeled as the letter:

Consider the following statements:
I. The head of myosin is made of LMM and the tail is made of HMM
II. F Actin is monomeric while G actin is polymeric
III. Tropomyosin is composed of three globular proteins.
The incorrect statements are:

Select the correct match for the parts labeled as A, B, C and D in the given diagram of a sarcomere:

\(
\begin{array}{|l|l|l|l|l|}
\hline & \text { A } & \text { B } & \text { C } & \text { D } \\
\hline \text { 1. } & \text { I band } & \text { A band } & \text { H zone } & \text { M line } \\
\hline \text { 2. } & \text { I band } & \text { H zone } & \text { M line } & \text { Z line } \\
\hline \text { 3. } & \text { A band } & \text { I band } & \text { Z line } & \text { M line } \\
\hline \text { 4. } & \text { H zone } & \text { I band } & \text { M line } & \text { Z line } \\
\hline
\end{array}
\)

As the distance from Z line to Z line decreases, which bands shorten in a sarcomere?

All the following regarding red muscle fibers are true except:

During relaxation of a skeletal muscle:

What type of muscles do you expect to find in the inner walls of hollow visceral organs?

During muscle contraction, when the myosin head releases ADP and iP it:

Identify the correct statements regarding the protein shown in the given diagram:

A: I is the active site to which the head of myosin binds during muscle contraction.
B: II is the site for ATP molecule.
C: The head shown has an ATPase activity.

The correct statement regarding myofibril would be:

What happens during the contraction of a skeletal muscle fiber?

Identify the correct statement regarding the protein shown in the given figure:

Cross bridge formation during muscle contraction involves:

Muscle:
I: is derived from embryonic endoderm
II: constitutes about 40-50 percent of human body

Regarding a skeletal muscle fibre:
I: It is a syncytium.
II: It has sarcoplasmic reticulum [a type of smooth ER] that stores calcium.

Identify the incorrect statement regarding a sarcomere:

Which of the following leads to removal of masking of active sites for mysosin during muscle contraction?

Consider the following two statements:
Statement I: Red fibres are ‘red’ due to large amount of myoglobin.
Statement II: Red muscles are also called as aerobic muscles.

The given figure shows stages in cross bridge formation, rotation of head and breaking of cross bridge during muscle contraction. Select the correct match for A, B and C from the codes given:

\(
\begin{array}{|l||l|l|}
\hline \text { I. Sliding or rotation } & \text { (i) } & \text { A } \\
\hline \text { II. Breaking of cross bridge } & \text { (ii) } & \text { B } \\
\hline \text { III. Formation of cross bridge } & \text { (iii) } & \text { C } \\
\hline
\end{array}
\)

Codes:

\(
\begin{array}{|l|l|l|l|}
\hline & \text { I } & \text { II } & \text { III } \\
\hline 1 . & \text { B } & \text { A } & \text { C } \\
\hline 2 . & \text { B } & \text { C } & \text { A } \\
\hline 3 . & \text { A } & \text { B } & \text { C } \\
\hline 4 . & \text { C } & \text { A } & \text { B } \\
\hline
\end{array}
\)

Consider the following two statements:
I: Repeated activation of muscles can lead to fatigue.
II: Repeated activation of muscles can lead to accumulation of lactic acid.

The total number of vertebrosternal and vertebrochondral ribs in human body respectively are:

The total number of phalanges in the human body are:

The axial skeleton in human beings include:

The highest position in the human skull is occupied by:

Which of the following is not correct regarding scapula?
I. It is situated in the dorsal part of the thorax between the second and the seventh ribs.
II. Clavicle articulates with the acromion process of scapula.

Identify the correct statements regarding the given two figures:

I.  A is a part of the pectoral girdle and is commonly called as the collar bone.
II.  B is the scapula, a part of the pectoral girdle, which directly articulates with the breast bone, sternum.
III.  C represents carpal bones and the type of synovial joint seen between them is the saddle joint.
IV.  D is the coxal bone and three such bones fuse to form the pelvic girdle.
V.  E is patella that is also called as the knee cap.
VI.  F represents tarsals and they are eight in number.

The ribs in humans:
I: have two articulation surfaces on its dorsal end and are hence called bicephalic.
II: connect to the sternum directly or indirectly with the help of hyaline cartilage.

Identify the incorrect statement:

The given figure shows the bones of the human rib cage. All the following statements will be correct regarding the human ribs except:
I. Human ribs are dicondylic
II.   A represents the vertebra-sternal ribs
III.  B represents the vertebra-chondral ribs
IV.  C are the false ribs
V.  The costal cartilages shown are hyaline cartilages

The type of cartilage present in pubic symphysis is:

Match List-I with List-II
\(
\begin{array}{|c|l|}
\hline
\textbf{List-I} & \textbf{List-II} \\
\hline
\text{(a) Scapula} & \text{(i) Cartilaginous joints} \\
\text{(b) Cranium} & \text{(ii) Flat bone} \\
\text{(c) Sternum} & \text{(iii) Fibrous joints} \\
\text{(d) Vertebral column} & \text{(iv) Triangular flat bone} \\
\hline
\end{array}
\)
Choose the correct answer from the options given below.
\(
\begin{array}{|c|c|c|c|c|}
\hline & \text { (a) } & \text { (b) } & \text { (c) } & \text { (d) } \\
\hline 1 . & \text { (iv) } & \text { (ii) } & \text { (iii) } & \text { (i) } \\
\hline 2 . & \text { (iv) } & \text { (iii) } & \text { (ii) } & \text { (i) } \\
\hline 3 . & \text { (i) } & \text { (iii) } & \text { (ii) } & \text { (iv) } \\
\hline 4 . & \text { (ii) } & \text { (iii) } & \text { (iv) } & \text { (i) } \\
\hline
\end{array}
\)

Consider the given statements regarding the human vertebral column:
I. In adults, it is differentiated into cervical [7], thoracic [12], lumbar [5], sacral [1-fused] and coccygeal [1-fused] regions.
II. The first vertebra is called as axis and it articulates with the occipital condyles.
III. The spinal cord runs through a neural canal.
IV. It protects the spinal cord, supports the head and serves as the point of attachment for the ribs and musculature of the back.
The correct statements include:

Match each item in Column I with one in Column II and select the correct match from the codes given:
\(
\begin{array}{|l|l|l|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A } & \text { Myasthenia gravis } & \text { P } & \text { Auto-immune } \\
\hline \text { B } & \text { Arthritis } & \text { Q } & \text { Inflammation of joints } \\
\hline \text { C } & \text { Tetany } & \text { R } & \text { Low calcium in body fluids } \\
\hline \text { D } & \text { Osteoporosis } & \text { S } & \text { Low levels of oestrogen } \\
\hline
\end{array}
\)
Codes:
\(
\begin{array}{|l|l|l|l|l|}
\hline & \text { A } & \text { B } & \text { C } & \text { D } \\
\hline 1 . & \text { P } & \text { Q } & \text { R } & \text { S } \\
\hline 2 . & \text { Q } & \text { R } & \text { S } & \text { P } \\
\hline 3 . & \text { R } & \text { S } & \text { P } & \text { Q } \\
\hline 4 . & \text { S } & \text { P } & \text { Q } & \text { R } \\
\hline
\end{array}
\)

Consider the given statements regarding the human skull:
I. It has a total of 22 bones.
II. Cranial bones are 14 in number and the facial bones are 8 in number.
III. It is monocondylic.
IV. A single hyoid bone is located at the base of the buccal cavity.
The correct statements include: