Anatomy
Anatomy provides the structural foundation required for safe anaesthetic practice. This section covers clinically relevant anatomy of the airway, head and neck, thorax, peripheral nerves, neuraxial structures, vascular system and ultrasound anatomy. Emphasis is placed on anatomical relationships that influence airway management, regional anaesthesia, vascular access, monitoring and perioperative procedures.
Learning Objectives
- Describe the clinically relevant anatomy of the upper and lower airway.
- Identify major anatomical landmarks of the head, neck and thorax relevant to anaesthesia.
- Explain the anatomical basis of neuraxial and peripheral nerve blocks.
- Recognise the relationships of major vessels used for vascular access.
- Apply anatomical knowledge to ultrasound-guided procedures.
- Relate anatomical variations to potential anaesthetic complications.
High-Yield Points
- The cricoid cartilage is the only complete cartilaginous ring of the airway.
- The narrowest part of the adult airway is the vocal cords; in young children it is traditionally described at the cricoid level.
- The spinal cord usually terminates around the L1–L2 level in adults.
- The internal jugular vein usually lies anterolateral to the carotid artery, but anatomical variation is common.
- The pleura may extend above the medial third of the clavicle, which is relevant during central venous access.
- Ultrasound anatomy should always be confirmed dynamically rather than relying only on surface landmarks.
How to Study This Topic
Study anatomy in relation to common anaesthetic procedures rather than as isolated structures. Use diagrams, ultrasound images and cross-sectional anatomy together. Focus especially on airway management, regional anaesthesia, neuraxial techniques and vascular access.
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