PLTW Histology

What is the primary function of histology in the study of biology?

• To study the structure of tissues at the microscopic level

• To analyze the chemical composition of cells

• To examine the genetic material of organisms

• To investigate the ecological interactions of species

Which of the following stains is commonly used in histology to differentiate between different types of tissue?

• Gram stain

• Hematoxylin and eosin

• Crystal violet

• Safranin

In histology, what is the purpose of using a microtome?

• To stain tissues for better visualization

• To embed tissues in paraffin

• To cut thin sections of tissue for examination

• To fix tissues to preserve their structure

Which type of tissue is characterized by a high density of collagen fibers and is found in tendons and ligaments?

• Epithelial tissue

• Muscle tissue

• Connective tissue

• Nervous tissue

What is the role of epithelial tissue in the human body?

• To transmit electrical signals

• To provide structural support

• To cover body surfaces and line cavities

• To store energy in the form of fat

Which of the following is a characteristic feature of cardiac muscle tissue?

• Voluntary control

• Striated appearance

• Multinucleated cells

• Presence of intercalated discs

In histological studies, what is the significance of using a fixative?

• To enhance the color of tissues

• To preserve tissue structure and prevent decay

• To increase the magnification of tissues

• To separate different types of cells

Which of the following cell types is responsible for producing the extracellular matrix in connective tissue?

• Osteocytes

• Chondrocytes

• Fibroblasts

• Adipocytes

What is the main difference between smooth muscle tissue and skeletal muscle tissue?

• Smooth muscle is voluntary, while skeletal muscle is involuntary

• Smooth muscle is striated, while skeletal muscle is non-striated

• Smooth muscle is found in the heart, while skeletal muscle is found in the digestive tract

• Smooth muscle is non-striated, while skeletal muscle is striated

Which histological technique involves the use of antibodies to detect specific proteins in tissue sections?

• In situ hybridization

• Immunohistochemistry

• Western blotting

• Polymerase chain reaction