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level: Muscle Tissue and Muscles of Head and Throat

Questions and Answers List

level questions: Muscle Tissue and Muscles of Head and Throat

QuestionAnswer
What is the epimysium?the layer that covers the entire muscle
What is the perimysium? Endomysium?the layer that covers the fascicle; layer that covers the muscle fibers
What muscle is this? Function?occipitofrontalis (epicranius); draws the scalp posteriorly
What muscle is this? Function?orbicularis oculi; closes eyelids
What muscle is this? Function?orbicularis oris; superficial portion closes lips/protrudes lips. deep portion presses lips against teeth, important in phonation
What muscle is this? Function?zygomaticus; draws upper lip outward, upward, and laterally/ draws angle of mouth laterally and upward
What muscle is this? Function?buccinator; compresses the cheeks during the process of mastication
What muscle is this? Function?levator labii superioris; raises upper lip and moves it forward
What muscle is this? Function?risorius; retracts the angle of the mouth
What muscle is this? Function?depressor labii inferioris; draws lower lip inferiorly and laterally
What muscle is this? Function?depressor angel oris; draws angle of mouth downward and laterally
What muscle is this? Function?mentalis; raises and protrudes the lower lip, wrinkles the skin of the chin
What muscle is this? Function?temporalis; elevates and retracts the mandible against the maxilla with great force
What muscle is this? Function?medial pterygoid; assists the lateral pterygoid; draws mandible forward
What muscle is this? Function?lateral pterygoid; draws mandibular condyle and articular disc forward
What muscle is this? Function?masseter; raises mandible against maxillae with great force (closes mouth)
What muscle is this? Function?geniohyoid; elevates the hyoid/widens pharynx, depresses the mandible
What muscle is this? Function?mylohyoid; raises floor of mouth, elevates the hyoid, depresses the mandible
What muscle is this? Function?digastric; depresses mandible, elevates hyoid
What muscle is this? Function?omohyoid; depresses hyoid bone
What muscle is this? Function?sternohyoid; depresses hyoid and larynx during swallowing and speaking
What muscle is this this? Function?sternothryroid; depresses the thyroid cartilage, creates diff. vocal tones
What muscle is this? Function?thyrohyoid; elevates thyroid cartilage, depresses hyoid bone (brings the two closer together to make high pitch vocalizations)
What muscle is this? Function?genioglossus; depresses and extends the tongue
What muscle is this? Function?styloglossus; draws the side of tongue upwards and draws the tongue back
What muscle is this? Function?hyoglossus; depresses the tongue
What type of muscle is pictured?skeletal muscle; longitudinal
What type of muscle is pictured?skeletal muscle; longitudinal
What type of muscle is pictured?skeletal muscle; longitudinal
What type of muscle is pictured?skeletal muscle; striations
What type of muscle is pictured?skeletal muscle; cross section
What type of muscle is pictured?skeletal muscle; cross section
What type of muscle is pictured?skeletal muscle; cross section
What type of muscle is pictured?cardiac muscle
What type of muscle is pictured?cardiac muscle; intercalated discs
What type of muscle is pictured?smooth muscle; longitudinal and circular
What type of muscle is pictured?skeletal muscle; longitudinal and circular layers of smooth muscle
What type of muscle is pictured?smooth muscle; gallbladder
What type of muscle is pictured?smooth muscle; arrestor pili muscle
What type of muscle is pictured?smooth muscle; ciliary body (eye)
What type of muscle is pictured?smooth muscle; ciliary body (eye)
What is this structure?endomysium
What is this structure?perimysium
What structure is this?nuclei
What is this structure?myofibril
What structure is this?A-band (dark)
What structure is this?I-band (light)
What structure is this?sarcomere
What structure is this?t-tubule
What structure is this?terminal cisternae