The sensory cranial nerves include only the:

A. Transport oxygen from the air to the blood: Oxygen transport occurs across the alveolar–capillary membrane via diffusion driven by partial pressure gradients. Surfactant does not participate in gas exchange or oxygen binding. Its role is mechanical rather than transport-related.

B. Transport carbon dioxide from the blood to the air: Carbon dioxide is eliminated through diffusion from pulmonary capillaries into the alveoli. This process depends on solubility and pressure gradients, not on surfactant activity. Surfactant does not facilitate carbon dioxide movement.

C. Prevent each alveolus from collapsing as air moves in and out during respiration: Surfactant reduces surface tension within the alveoli, stabilizing them during the respiratory cycle. By lowering the work of breathing, it allows alveoli to remain open during exhalation. This function is essential for effective ventilation and gas exchange.

D. Trap foreign particles as they enter the bronchial tree: Foreign particles are trapped by mucus and removed by ciliary action in the conducting airways. Surfactant is produced in the alveoli and does not function in particle filtration. Its primary role is maintaining alveolar stability.

A. Occipital region: The occipital region corresponds to the posterior aspect of the cranium or the back of the head. It is an important anatomical landmark for locating the occipital bone and the attachment sites for several neck muscles.

B. Acromial region: The acromial region represents the point of the shoulder where the scapula's acromion process articulates with the clavicle. This area is a critical landmark for shoulder injections and for assessing injuries to the rotator cuff or the acromioclavicular joint.

C. Scapular region: This indicator points to the scapular region, which covers the posterior surface of the shoulder blade area on the upper back. This region contains major muscles such as the infraspinatus and supraspinatus, providing structural support for the shoulder girdle and protecting the posterior thoracic wall.

D. Lumbar region: The lumbar region, often referred to as the lower back, situated between the ribs and the pelvis. This area is clinically significant for weight-bearing and is a common site for spinal pathologies, but it is located in the axial skeleton and does not correspond to the lower limb joints.

E. Popliteal region: The popliteal region is the anatomical term for the hollow area or "pit" located directly behind the knee joint. This space is a crucial neurovascular corridor that contains the popliteal artery, popliteal vein, and the tibial nerve, and it is the standard location for palpating the popliteal pulse in clinical examinations.