Biod 151 Module 5 problem set Questions & Answers | Grade A | 100% Correct - Portage Learning Name the three types of muscle tissue found in the body. - ANSWER Cardiac, smooth, skeletal What does it mean that skeletal muscles are under conscious control? - ANSWER A person can consciously decide to use their muscles to complete an action What structures are included in the central nervous system? - ANSWER brain and spinal cord Describe a motor action vs. sensory input in terms of the nervous system. - ANSWER Motor actions is when the central nervous system sends an impulse to the muscle. Sensory input is when the nerves carry information from the external environment.
True or false: The brachial plexus supplies nerves to the lower extremities. -
ANSWER false 1 / 3
Describe the difference between tendons and ligaments. - ANSWER Tendons connect to the skeletal muscle and ligaments conect bone to bone stabilizes the joints where bones meet.Describe the meaning of muscle origin and insertion. - ANSWER The origin is the bony site of attachment that is stationary during the movement. The insertion is the bony site of attachment that is moved by the muscle contraction.The origin and insertion can be reversed in different types of movements.Describe the meaning of muscle action and innervation. - ANSWER The action of the muscle is movement of the body caused by contraction of the muscles Innervation is providing movement to the muscles fibers for a specific muscle.
Practice: Muscles of Facial Expression
*NOTE* This is not an exhaustive list. All the muscles in the module need to be learned for the exam. meaning of muscle action and innervation. - ANSWER Identify the muscle indicated below. Also name its action and innervation. - ANSWER Orbicularis Oculi
action: eye closure
innervation: facial nerve (CN VII)
- The picture in the exam is pointing to around the eye)
Identify the muscle indicated below. Also name its action and innervation. - ANSWER Orbicularis Oris action: mouth closure: closes lines, protrudes lips forward, presses lips against teeth
innervation: facial nerve (CN VII)
(On the exam the arrow is point around the mouth) 2 / 3
Identify the muscle indicated below. Also name its action and innervation. - ANSWER Risorius
action: pulls the corners of the mouth posteriorly (grin or grimace)
innervation: facial nerve (CN VII)
(on the exam the arrow is point to a small muscle near the mouth on the cheek) Identify the muscle indicated below. Also name its action and innervation. - ANSWER Frontalis ( occipitpfrontailis)
action: raise eyebrows
innervation: facial nerve (CN VII)
(on the exam the arrow is point to the forehead) Identify the muscle indicated below. Also name its action and innervation. - ANSWER Temporalis
action: jaw closure
innervation: trigeminal nerve (CN V, mandibular branch)
Identify the muscle below. Also name its action and innervation. - ANSWER Zygomaticus major
action: pulls corners of lips upward
innervation: facial nerve (CN VII)
Identify the muscle below. Also name its action and innervation. - ANSWER Buccinator
action: compress cheeks
innervation: facial nerve (CN VII)
- / 3