L1 Anatomy & Physiology for Speech - Quick Reference (CUHK)

Course Overview

  • Anatomy & Physiology of Speech, Language & Hearing: course on foundational anatomy and physiology relevant to SLP.

  • Structure: lectures, labs, textbooks, software/tools.

  • Lab sessions: there will be 22 lab sessions designed to complement lectures; at each lab there are 66 stations; groups rotate; two identical sessions (Tue – Jan intake; Thu – Sep intake).

  • Textbooks/Resources: Lippincott Connect, Applied Anatomy and Physiology for Speech-Language Pathology and Audiology (Second Edition); Anatomy and Physiology of Speech and Hearing; Essentials of Anatomy & Physiology for Communication Disorders; Netter's Atlas of Anatomy; EvOLVE study resources; online tools.

Terminology, Nomenclature & Basic Concepts

  • Basic definitions:

    • Anatomy: study of the structure and organisation of an organism.

    • Physiology: study of the functions of organisms and their parts.

    • Pathology: study of disease processes and changes in the organism.

  • Examples relevant to SLP: tongue muscles innervated by CN XII; conditions affecting structure/function (e.g., CLP, stroke).

Structural Organisation of the Human Body

  • Levels: Cells → Tissues → Organs → Systems.

  • Four tissue types: Epithelial, Connective, Muscle, Nerve.

Epithelial Tissue

  • Lines surfaces and cavities; protective barrier; tightly packed cells.

  • Types: Simple and Compound (stratified).

  • Special features: ciliated epithelium in some areas; glands (endocrine) produce hormones.

Connective Tissue

  • Functions: support, binding, and maintenance of the body; characterized by a matrix.

  • Major types: Loose, Dense, Specialized.

  • Subtypes and examples:

    • Loose: fills spaces between organs; binds parts together.

    • Dense: Tendons (muscle to bone), Ligaments (bone to bone/cartilage), Fascia.

    • Specialized: Cartilage, Bone, Blood.

  • Joints: Fibrous (synarthodial), Cartilaginous (amphiarthrodial), Synovial (diarthodial).

Skeletal Connective Tissue Details

  • Tendons: attach muscle to bone or cartilage; broad sheets called aponeuroses.

  • Ligaments: bind bone to bone; contain elastic fibres; crucial for joints.

  • Fascia: fibrous sheets under skin or around muscles.

Cartilage, Bone & Blood (Specialized Connective Tissue)

  • Cartilage: rigidity and flexibility; examples include nasal septum, epiglottis.

  • Bone: rigid skeletal support; protection of organs; axial skeleton examples.

  • Blood: fluid connective tissue (plasma + cells).

Muscular Tissue

  • Muscle cells (fibers) form muscle tissue; highly contractile.

  • Types by function: Cardiac, Smooth, Striated (skeletal).

  • Skeletal muscle: major for speech production; voluntary control.

  • Skeletal muscle fiber types:

    • Type 11: Slow-twitch (SO) – endurance, fatigue-resistant; aerobic respiration.

    • Type 22A: Fast oxidative (FO) – fast, mainly aerobic but can use glycolysis.

    • Type 22B: Fast glycolytic (FG) – fast, primarily anaerobic; fatigue-prone.

  • Distribution: trunk vs. limb muscles; oropharyngeal muscles are mainly Type 22; jaw muscles show mixed fiber types.

  • Organization: muscle fiber → fasciculus → endomysium (around fibers) → perimysium (around fascicles).

Nervous Tissue

  • Composed of neurons and glial support cells.

  • Locations: brain, spinal cord, peripheral nerves.

  • Functional categories: sensory, motor, integrative.

  • Communication: chemical (neurotransmitters) and electrical (action potentials).

  • Neuromuscular junction (NMJ): acetylcholine (Ach) release triggers muscle contraction.

Organs & Systems

  • Organ: two or more tissue types functioning together.

    • Examples: Larynx (airway protection, sound source), Tongue (mastication, articulation), Lungs (breathing).

  • Systems: two or more organs forming functional units.

  • List of major body systems (summary): Integumentary, Muscular, Skeletal, Cardiovascular, Nervous, Respiratory, Digestive, Urinary, Reproductive, Endocrine, Lymphatic/Immune.

Body Systems Related to Speech Production & Swallowing

  • Circulatory/Vascular: blood supply to brain and speech mechanisms.

  • Digestive: lips, tongue, velum, pharynx, esophagus, stomach – supports articulation and resonance.

  • Muscular (Skeletal): movement for speech production.

  • Nervous: innervation of muscles and mucosa relevant to speech.

  • Respiratory: power source for speech; breath support.

  • Skeletal: framework (cartilages, bones, ligaments, tendons, joints).

  • Adapted from standard texts.

Planes, Direction & Reference Terms

  • Standard Anatomical Position: body erect; palms facing forward; reference for directions.

  • Planes of Reference:

    • Coronal/Frontal plane

    • Sagittal plane

    • Transverse/Horizontal plane

  • Direction terms (examples):

    • Anterior vs Posterior; Superior vs Inferior; Left vs Right; Frontside vs Backside.

  • Axis concept: imaginary line around which the body is roughly symmetrical (e.g., longitudinal axis).

Cranial Sutures

  • At birth, skull composed of bony plates joined by sutures.

  • Sutures allow bones to overlap during birth and shape head as it grows.

  • Key sutures: Coronal (frontal vs parietal) and Sagittal (parietal left/right).

  • Note: craniosynostosis is a condition related to premature suture closure.

Lab & Practical Notes

  • Lab sessions complement lectures with guided materials and videos.

  • Sessions involve multiple stations and small-group rotation.

  • Two identical lab schedules correspond to different intakes.

Summary of Core Concepts

  • The body is organised into cells → tissues → organs → systems.

  • Four basic tissue types and their roles in structure and function.

  • Muscular, nervous, skeletal, and connective tissues underpin speech and swallowing.

  • Planes, directions, and anatomical position are essential for description and communication.

  • Organs and body systems interact to enable speech production and safe swallowing.

  • Foundational texts and online resources support learning and practice.

Quick Reference Textbooks & Resources

  • Lippincott Connect (Applied Anatomy and Physiology for Speech-Language Pathology and Audiology, 2nd Edition).

  • Anatomy and Physiology of Speech and Hearing (Rousseau et al.).

  • Essentials of Anatomy & Physiology for Communication Disorders (Seikel et al.).

  • Netter's Atlas of Anatomy for Speech, Swallowing, and Hearing (2nd Edition).

  • Evolve study resources; Winkingskull software; online cadaveric images and guides.

  • Additional open-access resources for anatomical terminology and diagrams.

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