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AN1.1-2 | Anatomical terminology — Gate Quiz
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In the standard anatomical position, the forearms are held so that the palms face:
Correct! In anatomical position, the body stands erect facing forward with palms facing anteriorly (forward). This is the universal reference position for all anatomical descriptions.
The anatomical position is the standard reference for all directional terms. Key features: standing erect, eyes forward, feet together, arms by sides with palms facing anteriorly (supinated).
Incorrect. In anatomical position, palms face anteriorly. Remember: erect, face forward, arms by sides, palms facing forward.
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In anatomical terminology, which structure is more medial in the lower limb?
Correct! The tibia is the medial bone of the leg. It is closer to the midline of the body compared to the fibula, which is lateral.
Medial = towards the midline; lateral = away from the midline. In the leg, tibia is medial, fibula is lateral. The medial malleolus (tibia) and lateral malleolus (fibula) are reliable landmarks.
Incorrect. Medial means closer to the midline. The tibia lies medially; the fibula (and its processes) are lateral.
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A CT scan image that divides the body into superior and inferior halves is taken in which plane?
Correct! The transverse (horizontal/axial) plane divides the body into superior and inferior portions. CT scans are typically displayed as axial (transverse) sections.
Three primary planes: (1) Sagittal — divides left and right; (2) Coronal (frontal) — divides anterior and posterior; (3) Transverse (axial) — divides superior and inferior. CT scans are axial by default.
Incorrect. Superior and inferior division is the transverse/axial plane. Sagittal divides left-right; coronal divides front-back.
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Regarding the upper limb, the elbow joint is described as being proximal to the wrist joint. What does 'proximal' mean in this context?
Correct! Proximal means nearer to the point of attachment to the trunk (or origin). The elbow is closer to the shoulder/trunk than the wrist, so it is proximal to the wrist.
Proximal/distal is used mainly for limbs. Proximal = towards the root of the limb (trunk attachment). Distal = towards the free end. Elbow (proximal) → Wrist (distal) → Fingers (most distal).
Incorrect. Proximal = nearer to the trunk or origin. Distal = farther from the trunk.
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During the act of bending the knee while walking up stairs, the movement occurring at the knee joint is best described as:
Correct! Flexion is the movement that decreases the angle between two body parts. Bending the knee decreases the angle at the posterior aspect of the knee joint.
Flexion: decreases the angle between body parts (bending). Extension: increases the angle (straightening). At the knee, flexion brings the heel toward the buttock; extension straightens the leg.
Incorrect. Bending the knee decreases the joint angle — this is flexion. Extension would straighten (increase the angle at) the knee.
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A patient presents to a clinic in Puducherry unable to turn his palm to face upward after a fracture. The lost movement is:
Correct! Supination is the movement that turns the palm upward (anteriorly in anatomical position). It is performed by the supinator and biceps brachii muscles.
Supination = palm faces up/anteriorly (like holding a bowl of soup). Pronation = palm faces down/posteriorly. Key muscles: Supinator + Biceps brachii for supination; Pronator teres + Pronator quadratus for pronation.
Incorrect. Turning the palm to face upward is supination. Pronation turns the palm downward.
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A child in a rural PHC in Tamil Nadu is found to be unable to raise his arm away from his body due to shoulder injury. The lost movement is:
Correct! Abduction is the movement of a limb away from the midline of the body. Raising the arm laterally away from the side of the body is shoulder abduction, primarily initiated by the deltoid and supraspinatus muscles.
Abduction = movement away from the midline (ABduct = Away). Adduction = movement towards the midline. At the shoulder, the first 15° of abduction is by supraspinatus, then deltoid takes over up to 90°.
Incorrect. Moving the arm away from the body (laterally) is abduction. Adduction would bring the arm towards or across the midline.
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The sternum is located anterior to the heart. In this context, 'anterior' means:
Correct! Anterior means 'in front of' or towards the ventral surface of the body. The sternum lies on the front of the chest, in front of the heart.
Anterior = ventral = in front. Posterior = dorsal = behind. Superior = above. Inferior = below. These are the four primary directional terms in the anatomical position.
Incorrect. Anterior means 'in front of' or toward the front (ventral) surface. Posterior means behind.
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A cricket player at a district-level match in Karnataka rolls his ankle inward (sole faces medially). This movement is correctly termed:
Correct! Inversion is the movement of the foot where the sole is turned to face medially (inward). It is the movement that typically causes lateral ankle sprains when done forcefully.
Inversion: sole faces medially. Eversion: sole faces laterally. These occur at the subtalar (talocalcaneal) and transverse tarsal joints. Forceful inversion = most common ankle sprain, damaging the anterior talofibular ligament (ATFL).
Incorrect. Turning the sole medially (inward) is inversion. Eversion turns the sole outward (laterally).
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When describing layers of the abdominal wall, the rectus abdominis muscle is deep to the external oblique muscle. This means the rectus abdominis is:
Correct! Deep means farther from the surface of the body (or skin). The rectus abdominis lies beneath (deep to) the external oblique aponeurosis.
Superficial = closer to the surface/skin. Deep = farther from the surface, towards the interior. These terms are used to describe relative positions of structures regardless of body position.
Incorrect. Deep = farther from the skin surface. Superficial = closer to the skin surface.
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