What is Coracobrachialis? The coracobrachialis is a long and thin muscle in the arm’s anterior compartment. It runs from the coracoid process of the scapula to the shaft of the humerus, as the term implies. The coracobrachialis muscle’s main function is to generate arm flexion and adduction at the shoulder joint. The musculocutaneous nerve innervates…
Introduction Rectus capitis anterior muscle is one of the deep neck muscles whose role is to flex the head on the neck at the atlantooccipital joint. The rectus capitis anterior muscle is a flat, small muscle that is nestled behind the upper portion of the longus capitis muscle. This short strap muscles belong to the…
Introduction Rectus capitis lateralis muscle is a small, paired muscle that is seen within the neck, deep to the prevertebral portion of the deep cervical fascia. It is a portion of the prevertebral muscle group along with also splenius capitis, levator scapulae, and middle and posterior scalene muscles. The rectus capitis lateralis consists of paired…
Introduction The human tongue is an organ that helps the process of digestion by facilitating the manipulation and movement of food particles during mastication and swallowing. The tongue is also essential in the exhibition of speech and essential for employing the sense of taste. The styloglossus muscles are paired with the extrinsic muscle of the…
Introduction Longus capitis muscle is a deep anterior neck muscle that drives in front of the cervical spine. Together with rectus capitis anterior muscle, rectus capitis lateralis muscle, longus cervicis muscle, and anterior scalene muscle, it produces the prevertebral layer of neck muscles. These muscles are also wrapped up in the prevertebral layer of the…
Introduction Longus colli is a paired muscle found on the anterior aspect of the vertebral column. As such, it is usually referred to as an anterior prevertebral muscle concurrently with longus capitis, rectus capitis anterior, and also scalenus anterior muscles. The longus colli muscle (the ‘long muscle of the neck) is also known as longus…
Introduction The platysma is a thin sheet-like muscle that fibs superficially within the anterior aspect of the neck. It arises in the upper thoracic and shoulder areas from a fascia that covers the pectoralis major and deltoid muscles. Its fibers ascend superomedially over the anterolateral element of the neck, to attach to the mandible and…
The optic nerve is highly important for your vision. It’s the 2nd cranial nerve out of 12 cranial nerves and part of your central nervous system, which includes your brain and spine. The optic nerve travels electrical impulses from your eyes toward your brain. Your brain processes according to sensory information so that you can…
The mesencephalon or midbrain is the greatest rostral (front) segment of the brainstem that joins the cerebellum and pons with the forebrain. For most of its portion, the midbrain sits in the posterior cranial fossa, crossing the hiatus of the tentorium cerebelli. The mesencephalon or midbrain is the smallest segment of the brainstem. However, it…
Introduction of the forebrain The forebrain (prosencephalon) is the substantial part of the brain, most of which is the cerebrum. other cardinal structures present in the forebrain comprise the thalamus, the hypothalamus, and the limbic system. The cerebrum is bisected into two cerebral hemispheres connected by a mass of white matter called the corpus callosum….
