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A–Z Index

R

All anatomy entries starting with "R"

28 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

28 entries · Muscles

Muscle Rectococcygeus Muscle musculus rectococcygeus Pelvis & Hip The rectococcygeus muscle is a paired smooth muscle band connecting the posterior rectal wall to the… Muscle Rectus Abdominis musculus rectus abdominis Abdomen The rectus abdominis is the paired, vertically oriented muscle running from the pubis to the lower… Muscle Rectus Abdominis Detail musculus rectus abdominis detail Abdomen The rectus abdominis is enclosed in the rectus sheath. Its segmental blood supply from the inferior… Muscle Rectus Capitis Anterior musculus rectus capitis anterior Neck The rectus capitis anterior is one of the prevertebral muscles lying directly on the anterior atlantooccipital… Muscle Rectus Capitis Anterior Detail musculus rectus capitis anterior detail Neck Rectus capitis anterior is one of the four prevertebral muscles at the craniovertebral junction. Its short… Muscle Rectus Capitis Lateralis musculus rectus capitis lateralis Neck The rectus capitis lateralis is a short prevertebral muscle bridging the lateral mass of the atlas… Muscle Rectus Capitis Lateralis Detail musculus rectus capitis lateralis detail Neck Rectus capitis lateralis connects the C1 transverse process to the jugular process of the occiput, producing… Muscle Rectus Capitis Posterior Major musculus rectus capitis posterior major Neck The rectus capitis posterior major is the larger of the two rectus capitis posterior muscles, forming… Muscle Rectus Capitis Posterior Major Detail musculus rectus capitis posterior major detail Neck Rectus capitis posterior major is the larger of the two rectus capitis posterior muscles, forming the… Muscle Rectus Capitis Posterior Minor musculus rectus capitis posterior minor Neck The rectus capitis posterior minor is the deepest and most medial of the suboccipital muscles, lying… Muscle Rectus Capitis Posterior Minor Detail musculus rectus capitis posterior minor detail Neck Rectus capitis posterior minor is the smallest suboccipital muscle, connecting the C1 posterior arch to the… Muscle Rectus Femoris musculus rectus femoris Thigh The rectus femoris is the only quadriceps head that crosses the hip joint, arising from the… Muscle Rectus Femoris Detail musculus rectus femoris detail Thigh The rectus femoris is unique among the quadriceps in crossing both the hip and knee joints.… Muscle Rhomboid Major musculus rhomboideus major Chest The rhomboid major is a quadrilateral muscle lying deep to the trapezius and connecting the mid-thoracic… Muscle Rhomboid Major (Full) musculus rhomboideus major Chest The rhomboid major is the larger of the two rhomboids, retracting the scapula and rotating the… Muscle Rhomboid Major at Scapular Insertion musculus rhomboideus major (insertio scapularis) Shoulder The rhomboid major inserts along the medial scapular border at the shoulder level, providing scapular retraction… Muscle Rhomboid Major Detail musculus rhomboideus major detail Chest The rhomboid major is the primary scapular retractor, drawing the scapula toward the spine. Its action… Muscle Rhomboid Minor musculus rhomboideus minor Chest The rhomboid minor is a small, cylindrical muscle directly above the rhomboid major, connecting the lower… Muscle Rhomboid Minor (Full) musculus rhomboideus minor Chest The rhomboid minor is the smaller, more superior rhomboid, inserting at the root of the scapular… Muscle Rhomboid Minor Detail musculus rhomboideus minor detail Chest The rhomboid minor is smaller and superior to rhomboid major, attaching at the root of the… Muscle Risorius musculus risorius Head & Skull The risorius is a variable and inconsistent muscle present in approximately 50 percent of people, pulling… Muscle Risorius Detail musculus risorius detail Head & Skull The risorius is a variable muscle — it may be absent, single, or multiple on each… Muscle Rotatores musculi rotatores Chest The rotatores are the deepest and shortest muscles of the transversospinalis group, spanning only one or… Muscle Rotatores (Thoracic) musculi rotatores thoracis Chest The rotatores are the deepest of the transversospinalis group, spanning one or two vertebral levels in…