In the region just deep to the eyebrows, are present which allow nerves and arteries to pass.

Correct Answer: C

Rationale: The supraorbital foramina (or notches), located just deep to the eyebrows on the frontal bone's supraorbital margin, allow the supraorbital nerve and artery to pass, supplying sensation and blood to the forehead. The nasal bridge is the bony junction of nasal bones, not a passage site. The frontal sinus , an air cavity above the eyes, doesn't transmit nerves or arteries. The maxillary sinus , below the eyes in the maxilla, is unrelated to this region. The supraorbital foramina's specific location and function in neurovascular passage make 'c' the correct answer.

Correct Answer: B

Rationale: The conjunctiva is a thin, transparent mucous membrane lining the inner eyelids and anterior eyeball, except the cornea. It secretes mucus and tears, lubricating the eye and protecting against debris and pathogens. Its transparency allows visibility of underlying vessels, and its immune cells surveil for infections like conjunctivitis. The sclera, the eye's white outer layer, is opaque and tough, supporting structure but not covering the eyelids or anterior surface flexibly. The choroid, a vascular layer between sclera and retina, nourishes the retina but lies deeper, not on the surface. The glabella, a forehead region above the nose, is unrelated to ocular anatomy. The conjunctiva's role extends beyond protection its goblet cells produce mucin, and its continuity with eyelid skin ensures a sealed barrier. Histological sections reveal its stratified epithelium, distinct from the sclera's collagen or choroid's vasculature. Ophthalmic literature underscores its protective and lubricating functions, critical for eye health, distinguishing it from other eye components.

Correct Answer: B

Rationale: Simple cuboidal epithelium, a single layer of cube-shaped cells, mainly functions in secretion and absorption, as in kidney tubules (reabsorbing water) or salivary glands (secreting saliva). Protection is more stratified squamous's role (e.g., skin). Diffusion suits simple squamous (e.g., alveoli), not cuboidal's thicker structure. Filtration occurs in kidneys, but cuboidal cells' active transport/secretion is primary. Its glandular and tubular roles, per epithelial classification, make 'b' correct.

Correct Answer: B

Rationale: Sebaceous glands produce sebum, an oil lubricating skin and hair, secreted via hair follicles in the dermis. Sweat glands produce sweat for cooling. Ceruminous glands make earwax, not skin oil. Mammary glands secrete milk. Sebaceous glands' oily output, preventing dryness, per integumentary function, makes 'b' correct.

Correct Answer: D

Rationale: Bone formation is termed osteogenesis (cell-driven bone creation) and ossification (matrix mineralization), interchangeable in anatomy e.g., intramembranous ossification forms flat bones. Osteolysis is bone breakdown. Both 'b' and 'c' are correct, reflecting developmental and remodeling processes, making 'd' the answer.