#1
Which of the following is a primary function of connective tissues?
Protection and support
ExplanationConnective tissues provide protection and structural support to various organs and tissues in the body.
#2
What is the primary function of synovial fluid in joint connective tissues?
Facilitate smooth movement
ExplanationSynovial fluid in joint connective tissues lubricates and nourishes the articulating surfaces, facilitating smooth movement and reducing friction.
#3
What is the primary function of blood connective tissue?
Transport of nutrients and gases
ExplanationBlood connective tissue primarily functions in the transport of nutrients, gases, hormones, and waste products throughout the body.
#4
Which connective tissue is characterized by a gel-like ground substance and widely distributed cells?
Areolar tissue
ExplanationAreolar tissue is a loose connective tissue characterized by a gel-like ground substance and widely distributed fibroblasts, macrophages, and other cells.
#5
Which connective tissue is responsible for connecting bones to other bones in joints?
Ligament
ExplanationLigaments connect bones to other bones in joints, providing stability and limiting excessive movement.
#6
What is the primary function of the extracellular matrix in connective tissues?
Support and structural integrity
ExplanationThe extracellular matrix in connective tissues provides support and structural integrity, maintaining tissue shape and resisting mechanical forces.
#7
What is the extracellular matrix composed of in connective tissues?
Proteins and carbohydrates
ExplanationThe extracellular matrix of connective tissues consists of a complex mixture of proteins and carbohydrates providing structural support and biochemical cues.
#8
Which type of connective tissue stores energy in the form of triglycerides?
Adipose tissue
ExplanationAdipose tissue acts as an energy reservoir, storing excess energy in the form of triglycerides.
#9
What is the function of elastic fibers in connective tissues?
Facilitate stretching and recoil
ExplanationElastic fibers in connective tissues provide elasticity, allowing tissues to stretch and recoil to their original shape.
#10
Which connective tissue is responsible for the formation of scar tissue during wound healing?
Fibrous tissue
ExplanationFibrous tissue, also known as fibrous connective tissue, forms scar tissue during wound healing, providing structural support but lacks flexibility.
#11
Which connective tissue is responsible for connecting bone to bone in joints?
Ligament
ExplanationLigaments are fibrous connective tissues that connect bone to bone, providing stability and preventing excessive movement at joints.
#12
What is the primary role of fibroblasts in connective tissues?
Matrix synthesis
ExplanationFibroblasts in connective tissues are responsible for synthesizing and maintaining the extracellular matrix, including collagen, elastin, and ground substance.
#13
What is the primary cell type in cartilage connective tissue?
Chondrocyte
ExplanationChondrocytes are the primary cells found in cartilage connective tissue, responsible for maintaining the extracellular matrix.
#14
Which connective tissue is responsible for connecting muscle to bone?
Tendon
ExplanationTendons are fibrous connective tissues that connect muscles to bones, transmitting the forces generated by muscles to produce movement.
#15
What is the main component of the extracellular matrix in bone tissue?
Mineralized matrix
ExplanationThe main component of the extracellular matrix in bone tissue is a mineralized matrix, primarily composed of calcium phosphate and collagen fibers.
#16
Which type of cell in connective tissues is involved in immune response and defense against pathogens?
Macrophage
ExplanationMacrophages are immune cells found in connective tissues, responsible for phagocytosis and initiating immune responses against pathogens.
#17
Which type of connective tissue is avascular and relies on diffusion for nutrient exchange?
Cartilage
ExplanationCartilage is avascular, relying on diffusion from surrounding tissues for nutrient exchange, and serves as a cushion between bones.
#18
What is the primary function of mast cells in connective tissues?
Initiate inflammatory responses
ExplanationMast cells in connective tissues are involved in initiating inflammatory responses by releasing histamine and other mediators in response to injury or infection.