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of 12 answered
01
In anatomical position, the body stands erect with palms facing: L0 — Constitution Notes
A. Anteriorly
B. Posteriorly
C. Medially
D. Laterally
✓ Correct answer: A — Anteriorly
In anatomical position the body stands erect, eyes forward, feet together, arms at sides with palms facing anteriorly (forward). This is the universal reference posture defined by Terminologia Anatomica.
Trap: Do not confuse with supination of the forearm, which also places palms anteriorly — anatomical position is a whole-body posture, not a forearm movement.
02
Which plane divides the body into equal right and left halves? L0 — Constitution Notes
A. Transverse plane
B. Midsagittal plane
C. Coronal plane
D. Frontal plane
✓ Correct answer: B — Midsagittal plane
The midsagittal (median) plane passes exactly through the midline, dividing the body into equal right and left halves. A parasagittal plane is parallel but offset, creating unequal halves.
Trap: Any sagittal plane divides into right/left, but only the midsagittal creates EQUAL halves. The coronal plane divides anterior/posterior — a common MCQ confusion.
03
The coronal (frontal) plane divides the body into: L0 — Constitution Notes
A. Right and left halves
B. Superior and inferior portions
C. Anterior and posterior portions
D. Medial and lateral portions
✓ Correct answer: C — Anterior and posterior portions
The coronal (frontal) plane is a vertical plane perpendicular to the sagittal that divides the body into anterior (front) and posterior (back) portions. It runs parallel to the coronal suture of the skull.
Trap: Both coronal and sagittal planes are vertical — students mix them. Memory aid: the coronal plane faces you like a crown (corona); sagittal runs front-to-back like an arrow (sagitta).
04
CT scans of the abdomen are routinely acquired in which plane? L0 — Constitution Notes
A. Sagittal
B. Coronal
C. Oblique
D. Transverse (axial)
✓ Correct answer: D — Transverse (axial)
CT acquires primary data as the X-ray beam rotates around the horizontal patient, producing transverse (axial) cross-sections by default. Coronal and sagittal reformats are derived from the axial dataset.
Trap: MRI of the spine is commonly viewed in the sagittal plane. CT is fundamentally an axial scanner — other planes are reformatted, not primary acquisitions.
05
The knee is _____ to the ankle: L0 — Constitution Notes
A. Proximal
B. Distal
C. Lateral
D. Superficial
✓ Correct answer: A — Proximal
Proximal means closer to the point of attachment (trunk). The knee is closer to the hip than the ankle, so the knee is proximal to the ankle. The ankle is distal to the knee.
Trap: Proximal/distal are used only for limbs. For trunk structures, use superior/inferior instead.
06
The sternum is _____ to the heart: L0 — Constitution Notes
A. Posterior
B. Anterior
C. Medial
D. Superior
✓ Correct answer: B — Anterior
The sternum lies on the anterior chest wall, directly in front of the heart. This is why cardiac compressions (CPR) are performed by pressing on the sternum — it transmits force to the heart posteriorly.
Trap: The heart is NOT medial to the sternum — both lie on or near the midline, so neither is medial to the other. Medial/lateral describe side-to-side relationships from the midline.
07
Which term describes a structure lying closer to the body surface? L0 — Constitution Notes
A. Deep
B. Proximal
C. Superficial
D. Inferior
✓ Correct answer: C — Superficial
Superficial (external) means toward or near the body surface. Deep (internal) means away from the surface. The skin is superficial to the muscles; the heart is deep to the sternum.
Trap: Superficial/deep describe distance from the body surface, not from the midline (medial/lateral) nor from the trunk (proximal/distal).
08
A surgical patient positioned lying face down is described as: L0 — Constitution Notes
A. Supine
B. Lateral decubitus
C. Fowler's position
D. Prone
✓ Correct answer: D — Prone
Prone = ventral surface (face) down. Supine = dorsal surface down (lying face up). Posterior spinal surgeries and prone ventilation in ARDS use the prone position.
Trap: Supine is far more common clinically (most surgeries, abdominal exams). Prone specifically means face-DOWN. Mnemonic: prone = face down like a push-up position.
09
A stroke damages the left cerebral hemisphere and causes weakness of the right arm. This relationship is described as: L0 — Constitution Notes
A. Contralateral
B. Bilateral
C. Ipsilateral
D. Medial
✓ Correct answer: A — Contralateral
Contralateral means on the opposite side. Corticospinal tract fibres decussate (cross) in the medullary pyramids, so the left hemisphere controls the right side of the body. Ipsilateral means same side.
Trap: Most cranial nerve nuclei control ipsilateral muscles (exception: CN IV and upper motor neuron supply to CN VII forehead). Limb motor control is contralateral — a classic exam distinction.
10
Which movement decreases the angle between the forearm and upper arm? L0 — Constitution Notes
A. Extension
B. Flexion
C. Abduction
D. Adduction
✓ Correct answer: B — Flexion
Flexion decreases the angle between two bones at a joint (bending the elbow from ~180° toward 0°). Extension increases the angle (straightening). Abduction/adduction describe movement relative to the midline, not joint angles.
Trap: Dorsiflexion of the foot follows dorsal surface convention, not the angle-decrease rule — do not apply the angle rule universally to the ankle.
11
The study of body function and the mechanisms by which the body maintains homeostasis is called: L0 — Constitution Notes
A. Anatomy
B. Histology
C. Physiology
D. Embryology
✓ Correct answer: C — Physiology
Physiology studies how the body functions and maintains homeostasis. Anatomy studies structure; histology studies tissues microscopically; embryology studies development (fertilization to 8th week). Structure determines function.
Trap: Pathophysiology combines physiology with disease mechanisms — not the same as pure physiology or anatomy. TMU teaches physiology as a separate course running in parallel with anatomy.
12
Histology involves the microscopic examination of thin stained sections to study: L0 — Constitution Notes
A. Embryonic development
B. Gross body structure
C. Organ function
D. Tissue structure
✓ Correct answer: D — Tissue structure
Histology (microscopic anatomy) examines thin tissue sections stained with dyes (e.g., H&E) to reveal cellular and extracellular architecture. It is the microscopic basis of pathology — diseased tissues are identified histologically via biopsy.
Trap: Cytology studies individual cells (e.g., cervical smear), whereas histology studies organised tissue architecture. Both require microscopy but differ in specimen preparation and diagnostic application.
01Anatomy+
The science of body structures and their relationships. Derived from Greek 'anatome' meaning dissection. Anatomy is traditionally studied through regional (body areas) and systematic (organ systems) approaches. At TMU, gross anatomy is taught through lectures combined with cadaver dissection.
Gray's Anatomy for Students 4e · Chapter 1
02Gross anatomy+
The study of structures visible to the naked eye without magnification. Also called macroscopic anatomy. It includes surface anatomy, regional anatomy, and systemic anatomy.
Gray's Anatomy for Students 4e · Chapter 1
03Histology+
The study of tissues at the microscopic level, involving the examination of thin tissue sections stained to reveal cellular and extracellular components. Essential for understanding pathology.
Gray's Anatomy for Students 4e · Chapter 1
04Embryology+
The study of development from fertilization through the eighth week of gestation, including the formation of the three germ layers (ectoderm, mesoderm, endoderm) and their derivatives.
Gray's Anatomy for Students 4e · Chapter 1
05Physiology+
The study of body functions and the mechanisms by which the body maintains homeostasis. Complementary to anatomy in medical education.
Gray's Anatomy for Students 4e · Chapter 1
06Anatomical position+
The standard reference position: standing erect, eyes forward, feet together, arms at sides with palms facing anteriorly. All directional terms are relative to this position.
Gray's Anatomy for Students 4e · Chapter 1
07Sagittal plane+
A vertical plane that divides the body into right and left portions. The midsagittal (median) plane passes through the midline creating equal halves; parasagittal planes are parallel but off-centre.
Gray's Anatomy for Students 4e · Chapter 1
08Coronal (frontal) plane+
A vertical plane that divides the body into anterior (front) and posterior (back) portions. Runs parallel to the coronal suture of the skull.
Gray's Anatomy for Students 4e · Chapter 1
09Transverse (horizontal) plane+
A plane perpendicular to the long axis of the body that divides it into superior (upper) and inferior (lower) parts. Also called the axial plane — the standard acquisition plane for CT imaging.
Gray's Anatomy for Students 4e · Chapter 1
10Superior (cranial)+
Toward the head or upper part of a structure. The opposite is inferior (caudal). Example: the heart is superior to the stomach.
Gray's Anatomy for Students 4e · Chapter 1
11Inferior (caudal)+
Away from the head or toward the lower part of a structure. Example: the kidneys are inferior to the liver.
Gray's Anatomy for Students 4e · Chapter 1
12Anterior (ventral)+
Toward the front of the body. The opposite is posterior (dorsal). Example: the sternum is anterior to the heart.
Gray's Anatomy for Students 4e · Chapter 1
13Posterior (dorsal)+
Toward the back of the body. Example: the vertebral column is posterior to the aorta.
Gray's Anatomy for Students 4e · Chapter 1
14Medial+
Toward the midline of the body. Example: the nose is medial to the eyes.
Gray's Anatomy for Students 4e · Chapter 1
15Lateral+
Away from the midline of the body. Example: the ears are lateral to the nose.
Gray's Anatomy for Students 4e · Chapter 1
16Proximal+
Closer to the point of attachment or origin (trunk). Used mainly for limbs. Example: the elbow is proximal to the wrist.
Gray's Anatomy for Students 4e · Chapter 1
17Distal+
Farther from the point of attachment or origin. Example: the fingers are distal to the elbow.
Gray's Anatomy for Students 4e · Chapter 1
18Superficial (external)+
Toward or on the surface of the body. The opposite is deep (internal). Example: the skin is superficial to the muscles.
Gray's Anatomy for Students 4e · Chapter 1
19Deep (internal)+
Away from the body surface. Example: the heart is deep to the sternum.
Gray's Anatomy for Students 4e · Chapter 1
20Ipsilateral+
On the same side of the body. Example: the right hand and right foot are ipsilateral.
Gray's Anatomy for Students 4e · Chapter 1
21Contralateral+
On the opposite side of the body. Example: a left cerebral hemisphere stroke causes contralateral (right-sided) weakness.
Gray's Anatomy for Students 4e · Chapter 1
22Prone+
Lying face down (ventral surface down). The opposite is supine (lying face up).
Gray's Anatomy for Students 4e · Chapter 1
23Supine+
Lying face up (dorsal surface down). Standard position for abdominal surgery and physical examination.
Gray's Anatomy for Students 4e · Chapter 1
24Flexion+
Movement that decreases the angle between two bones at a joint. Example: bending the elbow.
Gray's Anatomy for Students 4e · Chapter 1
25Extension+
Movement that increases the angle between two bones at a joint. Example: straightening the knee.
Gray's Anatomy for Students 4e · Chapter 1
E1
Describe the three cardinal anatomical planes and give an example of a clinical imaging view that corresponds to each. Explain why understanding these planes is essential for interpreting medical images.
15 marks
The Three Cardinal Planes
The three cardinal planes are fundamental to anatomical description and medical imaging interpretation:
- Sagittal plane: A vertical plane that divides the body into right and left parts. The midsagittal (median) plane passes exactly through the midline. Clinical example: Sagittal MRI of the brain and spinal cord — the standard view for assessing intervertebral discs, the corpus callosum, and midline brain structures.
- Coronal (frontal) plane: A vertical plane perpendicular to the sagittal that divides the body into anterior and posterior parts. Clinical example: Coronal CT of the chest — used for evaluating lung parenchyma, mediastinal masses, and pleural effusions.
- Transverse (horizontal/axial) plane: A plane perpendicular to the long axis dividing the body into superior and inferior parts. Clinical example: Axial CT of the abdomen — the standard primary acquisition plane for evaluating liver lesions, renal masses, and abdominal trauma.
Clinical Importance
Understanding these planes is essential because radiological images are displayed in specific planes, and the clinician must mentally reconstruct three-dimensional relationships from two-dimensional slices. Misinterpreting the plane can lead to diagnostic errors — for example, confusing an axial and coronal chest CT can reverse the interpretation of mediastinal anatomy. Coronal CT reformats are routinely used to assess diaphragm integrity in trauma cases.
Marking points
Definition of each plane with direction of division (3 × 2 = 6 marks) · Correct clinical imaging example for each plane (3 × 2 = 6 marks) · Clinical relevance of plane knowledge for image interpretation (3 marks)
E2
Explain the anatomical position and why it serves as the standard reference for all anatomical descriptions. Discuss the common directional terms used in anatomy with clinical examples.
15 marks
The Anatomical Position
The anatomical position is the universally accepted reference posture: standing erect, facing forward, arms at the sides with palms facing anteriorly, and feet together. It was standardised by the Federative International Programme on Anatomical Terminology (Terminologia Anatomica) and is used worldwide in medical education and clinical practice. All directional terms are defined relative to this position, regardless of the patient's actual posture.
Key Directional Terms
- Superior / Inferior: Toward the head / toward the feet — the heart is superior to the diaphragm
- Anterior / Posterior: Toward the front / back — the sternum is anterior to the heart
- Medial / Lateral: Toward / away from the midline — the nose is medial to the eyes; the ears are lateral
- Proximal / Distal: Closer to / farther from the trunk — the elbow is proximal to the wrist (limbs only)
- Superficial / Deep: Toward / away from the surface — the skin is superficial to the muscles
- Ipsilateral / Contralateral: Same side / opposite side — the corticospinal tract crosses the midline, causing contralateral limb deficits in stroke
Importance of Standardisation
Without this standard reference, descriptions would vary with body position, leading to confusion in medical communication, surgical planning, and radiological reporting. Stating that a tumour is 'below' the liver is ambiguous — 'inferior' unambiguously describes the relationship regardless of whether the patient is standing, supine, or prone.
Marking points
Full definition of anatomical position with all components (4 marks) · Six directional term pairs correctly defined with examples (6 × 1 = 6 marks) · Explanation of why standardisation matters clinically (3 marks) · Correct identification of proximal/distal as limb-specific terms (2 marks)