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A–Z Index

O

All anatomy entries starting with "O"

37 entries
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
37 entries
Ligament Oblique Popliteal Ligament ligamentum popliteum obliquum Knee The oblique popliteal ligament is an expansion of the semimembranosus tendon that fans across the posterior… Vessel Obturator Artery arteria obturatoria Pelvis & Hip The obturator artery is the primary supply to the adductor compartment muscles and provides the acetabular… Muscle Obturator Externus musculus obturator externus Pelvis & Hip The obturator externus is a flat, fan-shaped muscle on the outer surface of the pelvis that… Muscle Obturator Externus (Full) musculus obturator externus Pelvis & Hip The obturator externus is the deepest external hip rotator, inserting in the trochanteric fossa deep to… Muscle Obturator Internus musculus obturator internus Pelvis & Hip The obturator internus originates inside the pelvis on the inner surface of the obturator membrane, makes… Muscle Obturator Internus (Full) musculus obturator internus Pelvis & Hip The obturator internus makes a 90-degree turn around the lesser sciatic notch (using the bone as… Tendon Obturator Internus Tendon tendo musculi obturatoris interni Pelvis & Hip The obturator internus tendon takes a unique 90-degree turn around the lesser sciatic notch (which acts… Nerve Obturator Nerve nervus obturatorius Thigh The obturator nerve emerges from the medial border of the psoas, crosses the pelvic brim, and… Nerve Obturator Nerve (Full) nervus obturatorius Thigh The obturator nerve supplies the adductor compartment and the medial thigh, and importantly gives an articular… Vessel Occipital Artery arteria occipitalis Head & Skull The occipital artery is the primary blood supply to the posterior scalp and upper posterior neck… Bone Occipital Bone os occipitale Head & Skull The occipital bone forms the posterior and inferior cranium, featuring the foramen magnum through which the… Joint Occipitocervical Junction (Craniovertebral) articulatio craniovertebralis Neck The craniovertebral junction encompasses the atlanto-occipital joints (skull on C1) and the atlantoaxial joints (C1 on… Muscle Occipitofrontalis musculus occipitofrontalis Head & Skull The occipitofrontalis is the complete epicranial muscle, consisting of the frontal belly (frontalis) anteriorly and the… Nerve Oculomotor Nerve nervus oculomotorius (CN III) Head & Skull The oculomotor nerve controls four of the six extra-ocular muscles, the levator palpebrae superioris, and the… Nerve Oculomotor Nerve (CN III) — Full nervus oculomotorius Head & Skull CN III is the primary ocular motor nerve, supplying four of the six extraocular muscles plus… Bone Olecranon olecranon ulnae Upper Arm The olecranon is the posterior prominence of the proximal ulna that fits into the olecranon fossa… Bursa Olecranon Bursa bursa olecrani Upper Arm The olecranon bursa is a large subcutaneous bursa at the tip of the elbow, prone to… Bursa Olecranon Bursa (Full) bursa olecrani Upper Arm The olecranon bursa is one of the largest subcutaneous bursae in the body, providing frictionless skin… Nerve Olfactory Nerve (CN I) nervus olfactorius Head & Skull CN I is unique among cranial nerves — it is a direct extension of the brain… Muscle Omohyoid musculus omohyoideus Neck The omohyoid is a digastric muscle with two bellies and an intermediate tendon, running from the… Nerve Ophthalmic Nerve nervus ophthalmicus (CN V1) Head & Skull The ophthalmic division of the trigeminal nerve is the smallest of the three divisions, providing purely… Muscle Opponens Digiti Minimi musculus opponens digiti minimi Hand & Wrist The opponens digiti minimi is the deepest hypothenar muscle, inserting along the entire fifth metacarpal shaft… Muscle Opponens Digiti Minimi (Foot) musculus opponens digiti minimi pedis Foot & Ankle The opponens digiti minimi of the foot opposes the fifth metatarsal to help cup the lateral… Muscle Opponens Digiti Minimi (Hand) musculus opponens digiti minimi manus Hand & Wrist The opponens digiti minimi wraps around the fifth metacarpal to rotate and flex it at the…
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