Thyroid

Model Of The Intern Anatomy Of The Neck Of An Adult Human Body, In Three Quarter View. In The Left Half Of The Head Are Shown The Bones Of The Face. Behind The Adam's Apple, The Larynx In Light Blue Is Composed Of Several Cartilages, But Only The Thyroid Cartilage Is Seen Here. It Is Linked By Ligaments In White To The Cricoid Cartilage, Masked By The Thyroid Gland By The Cricothyroid Ligament And To The Hyoid Bone, At The Base Of The Skull By The Thyrohyoid Membrane. The Larynx Continues With The Trachea, Whose Cartilaginous Rings Are Illustrated In Light Blue. The Thyroid Gland In Light Orange Covers The Trachea. It Is Irrigated By The Superior Thyroid Arteries In Red, Coming From The Common Carotid Arteries In Red, Steming From The Aortic Arch, Running Alongside The Larynx And Going Oxygenate The Head Structures. The Inferior Thyroid Veins In Royal Blue Emerge From The Thyroid Gland And Lead To The Internal Jugular Vein. The Right And Left Internal Jugular Veins In Royal Blue Begin At The Base Of The Skull, Go Down On Both Sides Of The Throat To Reach The Clavicles, Where They Join Up With The Subclavian Veins Coming From The Upper Limbs To Form The Brachiocephalic Trunk. The Latter Flows Into The Superior Vena Cava, Which Spills Into The Heart. The Scalene Muscles In Carmine, Located On The Sides Of The Neck, Allow To Incline The Head And The Cricothyroid Muscle In Carmine, Situated Between The Thyroid Cartilage And The Thyroid Gland, Stretchs The Vocal Cords. (Photo By BSIP/UIG Via Getty Images)