biod 151 lab 5

● a specialist studying muscles works in a field called myology ● discuss how muscles help in the function of communication ○ muscles contract to allow us to speak; both verbal and nonverbal communication (facial expressions) **the muscles are responsible for - movement around mouth and neck that help with speech - non-verbal expressions (facial) - swallowing ● which of the following is true concerning tendons a. tendons connect bone to bone b. tendons connect muscle to muscle c. tendons connect muscle to bone d. tendons are not involved in the function of muscles ● frontalis a. elevates the eyebrows b. wrinkles the skin of the forehead c. covers the posterior portion of the head d. retracts the scalp e. A & B f. C & D ● occipitalis a. elevates the eyebrows b. wrinkles the skin of the forehead c. covers the back of the head d. retracts the scalp e. A & B f. C & D ● orbicularis oris a. surrounds the eye b. surrounds the mouth c. controls squinting d. controls mouth closure e. A & C f. B & D ● orbicularis oculi a. surrounds the eye b. surrounds the mouth c. controls squinting d. controls mouth closure e. A & C f. B & D ● depressor labii inferioris a. is also called the “laughing muscle” b. pulls the angle of the mouth upward and laterally c. draws the lower lip down and laterally d. assists in expressions of doubt e. A & B f. C & D ● zygomaticus major

a. is also called the “laughing muscle” b. pulls the angle of the mouth upward and laterally c. draws the lower lip down and laterally d. assists in expressions of doubt e. A & B f. C & D ● buccinator a. is located deep within the cheek b. compresses the cheek when chewing c. elevates and protrudes the lips d. is located superficially e. A & B f. C & D ● mentalis a. is located deep within the cheek b. compresses the cheek when chewing c. wrinkles skin on the chin d. is located superficially e. A & B f. C & D ● identify the muscle and innervation in the picture. (dissection of anterior neck) platysma innervation = facial nerve (CN VII) ● identify the muscle and innervation (specific branch) in the picture. (dissection of lateral face) masseter innervation = mandibular branch of trigeminal nerve ● identify the muscle and innervation in the picture