Quiz 3

Which structure connects keratinocytes and anchors intermediate filaments?

• Tight junctions

• Desmosomes

• Gap junctions

• Hemidesmosomes

What type of junction is composed of connexons and allows ion exchange?

• Tight junctions

• Gap junctions

• Adherens junctions

• Desmosomes

Which protein family forms the core of desmosomes?

• Claudins

• Integrins

• Desmogleins and desmocollins

• Connexins

Merkel cells function as what type of receptor?

• Thermoreceptors

• Pain receptors

• Mechanoreceptors

• Chemoreceptors

Which cells contain keratohyalin granules?

• Stratum spinosum

• Stratum granulosum

• Stratum basale

• Stratum corneum

What is the main fibrous protein in dermis that gives tensile strength?

• Actin

• Keratin

• Collagen

• Laminin

The layer between the dermis and subcutaneous fat is the:

• Hypodermis

• Reticular dermis

• Papillary dermis

• Deep vascular plexus

Which cells are the main synthesizers of dermal matrix?

• Keratinocytes

• Fibroblasts

• Melanocytes

• Macrophages

Which component gives the skin its elasticity?

• Collagen

• Desmosomes

• Elastic fibers

• Lamellar granules

Which dermal layer is more metabolically active and superficial?

• Reticular dermis

• Subcutis

• Papillary dermis

• Adventitial dermis