Test Bank - Chapter 01 Q1: Which of the following facial features is located on the side of each naris? A. Orbit B. Nasal ala (Correct) C. Nasal septum D. Philtrum Rationale: The nares are separated by the midline nasal septum. The nares are also bounded on each side by winglike cartilaginous structures, each ala (plural, alae) of the nose. In the orbital region of the face, the eyeball and all its supporting structures are contained in the orbit of the skull, the bony eye socket. On the midline of the upper lip extending inferiorly from the nasal septum, is a vertical groove, the philtrum.
Q2: The lips are outlined from the surrounding skin by a transition area that is the A. philtrum. B. mucogingival junction. C. mucocutaneous junction. (Correct) D. mandibular symphysis. Rationale: The lips are outlined from the surrounding skin by a transition area, the mucocutaneous junction at the vermilion border. Each lip's inner vermilion zone is redder or darker with darker skin tones than the surrounding skin, possibly with localized physiologic pigmentation. On the midline of the upper lip extending inferiorly from the nasal septum is a vertical groove, the philtrum. The scallop-shaped line of demarcation within the oral vestibule between the attached gingiva with its thicker pink to darker pink tissue (with darker skin tones) and the alveolar mucosa with its thinner and redder to even darker red tissue that is noted by the mucogingival junction. The midline of the mandible is marked by the mandibular symphysis.
Q3: Which of the following structures is located in the anterior midline of the neck? A. Thyroid cartilage (Correct) B. Parathyroid glands C. Sternocleidomastoid muscle D. Submandibular salivary gland Rationale: Located in the anterior midline and inferior to the hyoid bone, is the thyroid cartilage, which is the prominence of the “voice box” or larynx. The vocal cords or ligaments of the larynx are attached to the posterior surface of the thyroid cartilage. The parathyroid glands are located close to or within the posterior aspect of the thyroid gland; the thyroid gland itself is located within the midline cervical area. The large strap muscle, the sternocleidomastoid muscle, located on each side of the neck of a patient. The submandibular salivary gland is in the neck region but not in the midline.
Illustrated Dental Embryology Histology and Anatomy 6e Fehrenbach Test Bank