CSCC Human Physiology Lab - Exam 1 Questions and Answers Solved 100%

3 factors that affect muscle tension - Length, muscle force, angle of pull A difference between the palpated heart rate and the heart rate calculated by auscultation is termed? - Pulse deficit Although we typically measure respiratory rate as a vital sign, what respiratory system parameter might be more useful in assessing an individual's health? - Respiratory volumes measure oxygen levels with pulse ox. Area with only thick filament - A band Area with only thin filaments - I band CN I - Olfactory nerve, Sensory of smell CN II - Optic nerve, Sensory for Vision CN III - Oculomotor nerve, Motor to muscles that move eyeball, constricts pupil CN IV - Trochlear nerve, Motor to muscle that move eyeball CN IX - Glossopharyngeal nerve, Motor to muscles of pharynx salivry glands; sensory for taste CN V - Trigeminal nerve, Sensory to face, motor to muscles of mastication CN VI - Abducens nerve, Motor to muscles that eyeballCN VII - Facial nerve, Motor to muscles of face expression, controls tears and salivation, sensory for taste CN VIII - Vestibulocohlear nerve, Sensory for hearing and balance CN X - Vagus nerve, Sensory and motor to internal oragans in thoracic and abdominal cavities CN XI - Accessory nerve, Motor to neck and back muscles CN XII - Hypoglossal nerver, Motor to tongue muscles Cold water is introduced into the ear, can be used to assess the function of the vestibular portion of the vestibulocochlear nerve, what is that test more commonly used for? - Assess levels of consciousness complete or fused tetanus - no visible relaxation occurs Contraction phase - actin and myosin bind and the sarcomere shortens. Define motor unit - Motor neurons and skeletal muscle fibers innervated by that motor neurons axonal terminals Describe a test to assess the function of the olfactory nerve. - assessed by asking the subject to identify a common substance such as coffee or soap, by its odor. one nostril is occluded during the penetration of the odor so the left and right nerve can be tested individually