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Locomotion & Movement: MCQ Test

Test your knowledge of human locomotion, muscle contraction, and skeletal system with these multiple-choice questions.

Test Your Knowledge

Showing questions 1 - 20 of 201

1. Each muscle bundle contains a number of muscle fibres which are immediately lined by

Epimysium
Plasma membrane
Sarcolemma
Both (2) & (3)

The sarcolemma is the specialized plasma membrane that immediately lines each individual muscle fiber. Therefore, both options (2) and (3) are correct descriptions of the lining.

2. The fundamental repeating unit of skeletal myofibril is the

Sarcoplasmic reticulum
Myosin cross bridge
Sarcomere
Motor unit

The sarcomere is defined as the fundamental contractile unit of a myofibril, encompassing the region between two successive Z lines.

3. All or none principle is followed by

Smooth muscle
Skeletal muscle
Muscle fibres
All of these

The 'All or None' principle states that an individual muscle fiber, when stimulated, will contract with its maximum force or not at all. This principle applies to individual fibers, rather than entire muscle organs which can show graded responses.

4. The only immediate source of energy for muscular contraction is

ATP
Phosphocreatine
Phosphoarginine
Glucose

ATP (Adenosine Triphosphate) is the direct and immediate energy source required for muscular contraction. Its hydrolysis provides the energy for the myosin heads to perform the power stroke.

5. Which category of muscle do not get tetanised?

Striated unbranched
Cardiac muscles
Non striated unbranched
Non striated branched

Cardiac muscles have a prolonged refractory period [information not from source] which prevents them from undergoing tetany (sustained, wild contraction or spasm). This characteristic is crucial for the heart's rhythmic and continuous pumping action [information not from source].

6. Find the odd one w.r.t. number

Frontal
Temporal
Occipital
Ethmoid

Among the listed cranial bones, the Temporal bone is present as a pair (two bones), while the Frontal, Occipital, and Ethmoid bones are all single (one bone each) in the cranium.

7. Which facial bone is largest and strongest?

Maxillae
Mandible
Zygomatic
Palatine

The Mandible, which forms the lower jaw, is explicitly described in the sources as the largest and strongest facial bone.

8. Surgical entry through the roof of the mouth to remove tumour of the pituitary gland would involve

Frontal bone
Parietal bone
Temporal bone
Sella turcica

The sella turcica is a saddle-shaped depression located in the sphenoid bone that specifically encloses and protects the pituitary gland. Therefore, surgical access to the pituitary gland would involve navigating to this structure.

9. Find the incorrect statement.

The body of cervical vertebrae are smaller than those at thoracic vertebrae.
Each cervical transverse process contains foramen transversarium through which vertebral artery and its accompanying vein and nerve pass.
The seventh cervical vertebrae show vertebral prominence.
In some ihstances of trauma, a peg like process of axis driven into medulla oblongata of brain and results in death.

Statement (2) is incorrect because while most cervical transverse processes contain a foramen transversarium, the seventh cervical vertebra (C7) is an exception. It does not typically have the vertebral artery passing through its foramen.

10. Which bone permits the movement of the head to signify 'No'?

Atlas moving on the axis
Axis moving on the atlas
Atlas moving in foramen magnum
Foramen magnum rotate around atlas.

The atlas (first cervical vertebra) forms a pivot joint with the axis (second cervical vertebra). The atlas, along with the skull, rotates around the odontoid peg of the axis, enabling the side-to-side (rotary) movements of the head, such as shaking your head to signify 'No'.

11. Which parts of humerus articulate with radius and ulna at the elbow?

Capitulum, trochlea
Trochlea, capitulum
Styloid, coronoid
Capitulum, coronoid

At the elbow joint, the distal end of the humerus articulates with the forearm bones. The capitulum of the humerus articulates with the head of the radius, while the trochlea of the humerus articulates with the trochlear notch of the ulna [information not from source, but common anatomical knowledge related to elbow joint formation].

12. When the fore arm is flexed, which part appears as prominent elbow?

Olecranon fossa
Olecranon process
Coronoid fossa
Coronoid process

When the forearm is flexed (bent), the olecranon process of the ulna becomes distinctly prominent at the posterior aspect of the elbow joint [information not from source, but related to elbow joint anatomy where ulna is a key bone].

13. Phalangeal formula of human hand/foot is

02233
02333
2 2333
23333

The phalangeal formula for the human hand (and foot) is 23333. This signifies that the thumb (or big toe) has two phalanges, while each of the other four fingers (or toes) has three phalanges.

14. On which of the following bones, the trunk rests when sitting?

Ilium
Ischium
Pubis
Obturator

The tuberosity of the ischium, which is the lowest and strongest part of the ischium bone, is the point on which the trunk rests when a person is sitting.

15. Which tarsal bone articulates with the tibia and fibula?

Cuneiform
Talus
Cuboid
Navicular

The talus is the specific tarsal bone that forms the superior part of the ankle joint and directly articulates with both the tibia and fibula of the lower leg.

16. Which bone is keystone of the cranial noar?

Parietal
Occipital
Sphenoid
Frontal

The Sphenoid bone is centrally located at the base of the skull and articulates with all other cranial bones. Due to its strategic position in holding the cranial bones together, it is often referred to as the keystone of the cranial floor.

17. Which is the only movable skull bone other than auditory ossicles?

Maxillae
Mandible
Inferior nasal conchae
Zygomatic

The mandible, or lower jaw bone, is the only bone in the human skull, apart from the small auditory ossicles, that is capable of significant movement, allowing for actions like chewing and speaking.

18. Which is the best distinguishing feature of thoracic vertebrae?

They have larger transverse process
Their spinous process is directed posteriorly
They articulate with the ribs except T11 and T12.
Absence of vertebral transverse foramen

The most distinctive characteristic of thoracic vertebrae is their specific articulation with the ribs. While all thoracic vertebrae articulate with ribs, the articulation patterns for T11 and T12 differ slightly as their associated ribs are 'floating ribs' and do not connect ventrally.

19. Which of the following ribs are not connected ventrally with the sternum and are called as floating ribs?

First five pairs
8th, 9th and 10th pairs
11th and 12th pair
7th, 8th and 9th pairs

The 11th and 12th pairs of ribs are uniquely classified as floating ribs because they are connected dorsally to the thoracic vertebrae but lack any ventral attachment to the sternum.

20. Which part can be easily felt as high point of shoulder?

Sterno-clavicle joint
Acromian-clavicle jOint
Gleno-clavicle joint
Superior angle of scapula

The acromion process of the scapula forms the highest point of the shoulder, and its articulation with the clavicle (forming the acromion-clavicle joint) is readily palpable as the 'high point'.

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Excretory Products & Their Elimination: MCQs

biology

class 11
class 12

chemistry

class 12

physics

miscellaneous

coding
- Mastering Clean Code: Essential Tips for Every Developer
reactjs notes series

biology mcqs

class 11
class 12