Special parts of the skull

Orbits
The back of the eye socket is the greater wing of the sphenoid bone. The lacrimal bone, is tiny.. just like a pinky nail.. and it’s associated with the tear ducts.
Nasal Cavity
Paranasal sinuses
Sinuses are spaces in the bone themselves and the purpose is to lighten up the skull. They are lined with mucous membranes to trap stuff as well.
Hyoid bone
The hyoid bone anchors the tongue. It’s the only bone with no direct articulation with any other bone.
THAT IS ALL
Use this Table of Contents to go to the next article

YOU ARE HERE AT THE SKELETAL SYSTEM
- Cartilage and Bones
- Geography of the Skull
- Special parts of the skull
- The Vertebral Column
- Thoracic Cage, Ribs, Fontanelles
- Fundamentals of the Nervous System and Nervous Tissue
- CNS: Intro to Brain and Ventricles, Medulla Oblongata, Pons, Mid-Brain and Cerebellum
- Central Nervous System: Spinal Cord
- The Diencephalon
- The Cerebral Hemispheres
- Functional Areas of The Cerebral Cortex
- Cerebral White Matter and Gray Matter and Basal Ganglia
- The Limbic System and the Reticular Formation
- Protection for the Brain: Meninges, CSF, Blood-Brain Barrier
- Disorders of the Central Nervous System
- The Autonomic Nervous System (Includes sympathetic and parasymphathetic systems)
- Visceral Sensory Neurons and Referred Pain
- Intro to the Heart
- Blood Flow of the Heart (Circulation Flow)
- Myocardium
- Conducting System of the Heart (Nervous Impulse Flow)
- The Four Corners of the Heart
- Layers of the Pericardium, Heart Wall and Spiral Arrangement
- Function of the Atrioventricular and Semilunar Valves
- Blood Components, Hemoglobin, Type/Rh Factor, Agglutination
- Blood Vessels
- The Endocrine System (Pituitary, Thyroid, Pancreas, Adrenal, Gonads, etc)
- The Lymphatic System (Spleen, Thymus, Lymphatic vessels, nodes etc)
- The Respiratory System (Lungs, Alveoli, Bronchi, Trachea, Larynx, Nasal cavities, etc)
- The Immune System
- The Urinary System: Kidneys
- The Urinary System: Ureter and Urinary Bladder

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