C

C
• constrictor of pharynx -inferior Constrictor Inferior de la faringe
ORIGIN: Cricopharyngeus: lat aspect of arch of cricoid cartilage. Thyropharyngeus: oblique line of laminar of thyroid cartilage and fibrous cricothyroid arch. ACTION: Aids swallowing . Cricopharyngeus acts as upper oesophageal sphincter. INSERTION: Cricopharyngeus: continuous with muscle of opposite side, behind pharynx. Thyropharyngeus : lower pharyngeal raphe. NERVE: Pharyngeal plexus (IX, X and sympathetic) via pharyngeal br of X with its motor fibres from cranial accessory (XI).
• constrictor of pharynx -middle Constrictor Medio de la faringe
ORIGIN: Lower third of stylohyoid ligament, lesser cornu and superior border of greater cornu of hyoid bone. INSERTION: Middle portion of pharyngeal raphe. ACTION: Aids swallowing. NERVE: Pharyngeal plexus (IX, X and sympathetic) via pharyngeal branch of X with its motor fibers from cranial accessory nerve (XI).
• constrictor of pharynx -superior Constrictor Superior de la faringe
ORIGIN: Lower two thirds of med pterygoid plate, pterygomandibular raphe and post end of mylohyoid line on mandible. ACTION:Aids swallowing. INSERTION: Upper midline pharyngeal raphe and pharyngeal tubercle of clivus of occiput. NERVE: Pharyngeal plexus (IX, X and sympathetic) via pharyngeal br of X with its motor fibres from cranial accessory (XI).
• coracobrachialis Coracobraquial
ORIGIN: Coracoid process of scapula with biceps brachii. INSERTION: Upper half medial border of humerus. ACTION: Flexes and weakly adducts arm. NERVE: Musculocutaneous nerve (C5, 6, 7) (from lateral cord).
• corrugator supercilii Superciliar
ORIGIN: Medial superciliary arch. INSERTION: Skin of medial forehead. ACTION: Wrinkles forehead. NERVE: Temporal branch of facial nerve (VII).
• cremaster Cremastérico
ORIGIN: Lower border of internal oblique and transversus abdominis in inguinal canal. INSERTION: Loops around spermatic cord and tunica vaginalis and some fibers return to attach to pubic tubercle. ACTION: Retracts testis. NERVE: Genital branch (L2) of genitofemoral nerve (L1, 2).
• cricothyroid cricotiroideo
ORIGIN: Anterolateral aspect of cricoid cartilage. INSERTION: Inferior cornu and lower laminar of thyroid cartilage. ACTION: Lengthens and tenses vocal cords by tilting thyroid cartilage forwards. NERVE: External branch of superiorlaryngeal branch of vagus nerve (X).