DAANCE Anatomy and Physiology 2

Question 1

The trigeminal nerve (CN V) is the primary sensory nerve of the face. Which division provides sensory innervation to the maxillary teeth?

Accepted Answer

Maxillary division (V2)

Answer

Ophthalmic division (V1)

Answer

Mandibular division (V3)

Answer

Facial nerve (CN VII)

Question 2

The Frank-Starling mechanism describes the relationship between:

Accepted Answer

Ventricular end-diastolic volume and stroke volume (the more the ventricle fills, the more it contracts)

Answer

Blood pressure and heart rate during exercise

Answer

Oxygen saturation and hemoglobin concentration

Answer

Respiratory rate and tidal volume during spontaneous breathing

Question 3

The hypoglossal nerve (CN XII) controls which function relevant to airway management?

Accepted Answer

Motor innervation of the intrinsic and extrinsic tongue muscles

Answer

Sensation of the posterior tongue and pharynx

Answer

Secretomotor function of the parotid gland

Answer

Proprioception of the temporomandibular joint

Question 4

The carotid body is a peripheral chemoreceptor that responds primarily to:

Accepted Answer

Decreasing arterial O2 (PaO2 falling below 60 mmHg) and rising H+ (acidosis)

Answer

Increasing arterial CO2 (PaCO2 rising above 45 mmHg)

Answer

Blood pressure changes via baroreceptor stretch

Answer

Cerebral blood flow velocity changes

Question 5

The alveolar-arterial oxygen gradient (A-a gradient) is useful in assessing:

Accepted Answer

Whether hypoxemia results from hypoventilation alone or includes a pulmonary gas exchange problem

Answer

Cardiac output and circulatory efficiency

Answer

Hemoglobin affinity for oxygen at various pH levels

Answer

Tidal volume and functional residual capacity relationship

Question 6

Which type of drug interaction occurs when two sedatives are combined and produce an effect greater than the sum of their individual effects?

Accepted Answer

Synergistic (potentiation) interaction

Answer

Additive interaction

Answer

Antagonistic interaction

Answer

Tachyphylaxis