Obliquus capitis inferior muscle Anatomy One of the four suboccipital muscles is the obliquus capitis inferior muscle. The largest muscle of the four is obliquus capitis inferior, which is grouped with the rectus capitis posterior major, rectus capitis posterior minor, and obliquus capitis superior muscles. By supporting the atlantoaxial joint, obliquus capitis inferior helps to…
Obliquus capitis superior muscle is a small muscle in the upper back part of the neck and is one of the suboccipital muscles and part of the suboccipital triangle. origin: Lateral mass of atlas. Insertion : Lateral half of the inferior nuchal line Nerve: Suboccipital nerve. Actions: Extends head and flex head to the ipsilateral…
Splenius Capitis Muscle Anatomy Splenius capitis muscle is a broad, straplike muscle in the back of the neck. It pulls on the base of the skull from the vertebrae in the neck and upper thorax. It is involved in movements such as shaking the head. Origin: Nuchal ligament and spinous process of C7-T3. Insertion: Mastoid…
Longissimus capitis muscle: the muscle lateral to the semispinalis muscles. It is the longest subdivision of the erector spinae muscles that extends forward into the transverse processes of the posterior cervical vertebrae. origin: The transverse processes are bony projections that stick out diagonally from the back of the vertebrae, while the articular processes are bony…
Semispinalis Muscle Anatomy a group of three muscles belonging to the transversospinales. These are the semispinalis capitis, the semispinalis cervicis, and the semispinalis thoracis. Origin Cervical region: made up of seven vertebrae in the neck (C1-C7) The thoracic region: is made up of twelve vertebrae between the neck and lower back (T1-T12) Insertion The semispinalis…
Rectus capitis posterior major muscle Anatomy arises by a pointed tendon from the spinous process of the axis, and, becoming broader as it ascends, is inserted into the lateral part of the inferior nuchal line of the occipital bone and the surface of the bone immediately below the line. origin : Spinous process of the…
Rectus capitis posterior minor muscle Anatomy arises by a narrow pointed tendon from the tubercle on the posterior arch of the atlas, and, widening as it ascends, is inserted into the medial part of the inferior nuchal line of the occipital bone and the surface between it and the foramen magnum, and also takes some…
Obliquus capitis superior muscle Anatomy a small muscle in the upper back part of the neck and is one of the suboccipital muscles and part of the suboccipital triangle. Origin Lateral mass of atlas. Insertion Lateral half of the inferior nuchal line. Nerve Supply Suboccipital nerve. Blood Supply The obliquus capitis superior muscle and the…
Scalene Posterior Muscle Anatomy The scalene muscles are three paired muscles (anterior, middle, and posterior), located in the lateral aspect of the neck to the floor of the posterior triangle of the neck. a group of three pairs of muscles in the lateral neck, namely the anterior scalene, middle scalene, and posterior scalene. The posterior…
Introduction: knee joint is the largest and most complex joint of the body. The knee is one of the largest and most complex joints in the body. The knee joins the femur to the tibia. The smaller bone that runs alongside the tibia and the patella are the other bones that make the knee joint….
