Comprehensive Study Notes on Head and Neck Assessment

Head and Neck Assessment Notes

Introduction

  • Instructor: Janet M. Galiczewski, DNP, ANP, RN, CCRN

Anatomy of the Head

  • Skull: Rigid bony structure protecting the brain and sensory organs.
  • Cranial Bones: Includes the frontal, parietal, occipital, and temporal bones.
  • Cervical Vertebrae: Supports the cranium, numbered C1 to C7.
  • Cranial Nerve VII (Facial Nerve): Mediates facial expressions.
  • Cranial Nerve V (Trigeminal Nerve): Mediates sensations of pain and touch in the face.

Structure of the Skull

  • Components include:
    • Frontal bone
    • Temporal bone
    • Parietal bone
    • Occipital bone
    • Nasal bone
    • Maxilla
    • Zygomatic bone
    • Mandible
  • Parotid Gland: Involved in salivary secretion, drains into the mouth via the parotid duct.

Anatomy of the Neck

  • Major Neck Muscles:
    • Sternomastoid: Responsible for head rotation and flexion.
    • Trapezius: Aids in moving shoulders and extends the head.
  • Important Vessels:
    • Carotid Artery and Internal Jugular Vein: Located beneath the sternomastoid muscle.
    • External Jugular Vein: Runs diagonally across the sternomastoid muscle.
  • Cranial Nerve XI (Spinal Accessory): Innervates major neck muscles.
Thyroid Gland
  • Located anterior to the trachea in the neck; secretes T3 and T4 which regulate cellular metabolism.
  • Notable features:
    • Isthmus: Below the cricoid cartilage.
    • Thyroid Cartilage: Contains the palpable Adam's apple in males.

Assessment of Head and Neck

Inspection and Examination of Head
  • Hair: Assess quality, distribution, and pattern of loss (e.g., hyperthyroidism vs. hypothyroidism).
  • Scalp: Look for scaliness, lumps, or lesions.
  • Skull: Inspect size and contour for deformities or tenderness.
  • Face: Observe for asymmetry, involuntary movements, and skin texture.
Neck Inspection
  • Check for symmetry, masses, or scars.
  • Assess range of motion (ROM).

Lymphatic System in Head and Neck

  • Rich supply of lymph nodes plays vital roles in the immune system by filtering and eliminating foreign substances.
  • Accessible lymph node examination areas include:
    • Head & Neck
    • Arms
    • Axillae
    • Inguinal region
Lymph Node Characteristics
  • Normally not palpable unless enlarged; typically round, oval, smooth, and mobile.
  • Differentiate between malignant (hard, non-mobile, painless) and infectious (soft, mobile, tender) nodes.

Vascular Assessment

  • Carotid Pulse: Check for rhythm and strength.
  • Temporal Artery: Assess for abnormalities.
  • Jugular Venous Distension (JVD): Inspect for signs of heart failure.
  • Listen for Carotid Bruit: Indicates turbulent blood flow, potentially from vascular narrowing.

Examination of Nose, Mouth, and Pharynx

Nose Anatomy
  • Functions:
    • Warm, moisten, and filter inhaled air.
    • Sense of smell provided by the olfactory nerve.
  • Features:
    • Kiesselbach's Plexus: Common site for nosebleeds.
    • Turbinates: Increase surface area for filtering air.
Mouth Examination
  • Key components: lips, palate, cheeks, tongue.
    • Palate: Divided into hard (bone, white) and soft (muscle, pink).
    • Uvula: Hanging structure from the soft palate; critical in gag reflex testing.
  • Angina: Causes changes in tongue appearance or lesions.
Tongue and Salivary Glands
  • Parotid: Near ear, opening via Stenson's duct opposite the second molar.
  • Submandibular: Beneath the mandible, connected to Wharton's duct.
  • Tongue Functions: Mastication, swallowing, phonation, sensory perception.
Pharynx and Tonsils
  • Inspection must include posterior and anterior pillars and tonsils.
  • Check for signs of infection or lesions in the throat area.

Cranial Nerves and Their Functions

  • CN I: Olfactory (smell)
  • CN V: Trigeminal (motor & sensory for jaw movement and facial sensation)
  • CN VII: Facial (motor for facial expressions)
  • CN IX: Glossopharyngeal (gag reflex, taste)
  • CN X: Vagus (motor & sensory to pharynx and digestive tract)
  • CN XII: Hypoglossal (motor for tongue movement)

Conclusion

  • Regular examination of the head, neck, nose, mouth, and pharynx is critical for diagnosing potential health issues.
  • Understanding anatomy and conducting thorough assessments aids in effective healthcare delivery.