ATI RN
Questions About the Muscular System Questions
Question 1 of 5
Where is pseudostratified columnar epithelium typically found?
Correct Answer: B
Rationale: Pseudostratified columnar epithelium, appearing layered but single-layered with cilia, is typically in the respiratory tract (e.g., trachea), where it secretes mucus and moves debris via ciliary action. Skin has stratified squamous for protection. Stomach lining uses simple columnar for secretion/absorption. Kidney tubules feature simple cuboidal. The respiratory tract's need for mucus trapping and clearance, per tissue distribution, makes 'b' the correct location.
Question 2 of 5
Which type of bone tissue is dense and provides strength?
Correct Answer: A
Rationale: Compact bone, dense and cortical, provides strength and rigidity, forming bones' outer layer (e.g., femur shaft). Spongy bone and cancellous are synonymous, porous for marrow, less strong. Cartilage is flexible, not bone. Compact bone's density, per skeletal structure, makes 'a' correct.
Question 3 of 5
Which curve of the spine is formed when a child begins to walk?
Correct Answer: C
Rationale: The lumbar curve, a secondary curvature, forms when a child walks, shifting weight to an upright posture, enhancing balance. Cervical forms earlier (head lifting). Thoracic and sacral are primary, fetal curves. Lumbar's development, per spinal ontogeny, makes 'c' correct.
Question 4 of 5
What is a herniated disc?
Correct Answer: B
Rationale: A herniated disc is a bulging or ruptured intervertebral disc, pressing on spinal nerves, causing pain (e.g., sciatica). It's not a fracture , osteoporosis (c, bone loss), or joint inflammation (d, arthritis). Disc protrusion's effect, per pathology, makes 'b' correct.
Question 5 of 5
Which of the following specialties might focus on studying all of the structures of the ankle and foot?
Correct Answer: C
Rationale: Regional anatomy studies all structures (bones, muscles, nerves, etc.) within a specific body area, like the ankle and foot, making it ideal for a comprehensive focus on that region's anatomy. Microscopic anatomy examines cells/tissues at a cellular level, not gross structures. Muscle anatomy is too narrow, focusing only on muscles, not all ankle/foot components. Systemic anatomy studies body systems (e.g., skeletal) across the whole body, not one region. Regional anatomy's localized, all-inclusive approach, per anatomical study methods, makes 'c' the correct specialty.