BIO 252 Anatomy and Physiology II Exam 2 Review With Correct Answers

Knee-jerk (patellar) reflex - ANS: -Tapping the patellar with a hammer abruptly stretches the quadriceps femoris muscle of the thigh -stimulates numerous muscle spindles in the quadriceps -sends an intense volley of signals to the spinal cord Describe in detail two language areas in the brain - ANS: Wernicke's area: -responsible for understanding speech -allows you to recognize words and translate those words into thoughts -Damage to this area allows you to be able to speak but instead, your words don't make any logical sense -formulates phrases and transmits plan of speech to Broca area Broca's area: -referred to as the area for production of speech -involves coordinated contractions of your speech and breathing muscles that enable you to speak -works closely with the primary motor area as well as a premotor area to make speech happen -Damage to this area can cause a person to not be able to form words in order to articulate a thought. Lumbar nerves function - ANS: -lower limb movement(hip, leg, foot) thoracic nerve function - ANS: -truck control -temp regulation -abdominal muscles coccygeal nerve function - ANS: sensory and motor innervation to their respective dermatomes and myotomes