#1
Which of the following is not a component of connective tissue?
Neurons
ExplanationNeurons are not a component; connective tissue mainly consists of cells, fibers, and ground substance.
#2
Which protein provides tensile strength to connective tissues?
Collagen
ExplanationCollagen provides tensile strength, forming the structural framework of connective tissues.
#3
Which of the following is not a function of connective tissue?
Initiating and conducting nerve impulses
ExplanationInitiating and conducting nerve impulses is a function of nervous tissue, not connective tissue.
#4
What is the function of adipose tissue in the body?
Storing energy
ExplanationAdipose tissue stores energy in the form of triglycerides, serving as a fuel reserve.
#5
What is the primary cell type responsible for producing collagen fibers?
Fibroblasts
ExplanationFibroblasts are the main cells synthesizing collagen fibers in connective tissues.
#6
Which connective tissue type contains a fluid matrix called plasma?
Blood
ExplanationBlood contains plasma, a fluid matrix, and various cells and proteins.
#7
Which connective tissue type is found in the external ear and epiglottis?
Elastic cartilage
ExplanationElastic cartilage, with elastic fibers, provides flexibility and support in structures like the external ear.
#8
Which vitamin is essential for the synthesis of collagen?
Vitamin C
ExplanationVitamin C is crucial for collagen synthesis, facilitating the conversion of proline to hydroxyproline.
#9
Which glandular connective tissue type stores lipids for energy?
Adipose tissue
ExplanationAdipose tissue stores lipids for energy storage, insulation, and cushioning.
#10
Which type of connective tissue forms tendons and ligaments?
Dense regular connective tissue
ExplanationDense regular connective tissue forms tendons and ligaments, providing strong, organized support.
#11
What is the main function of fibroblasts in connective tissue?
Secretion of extracellular matrix components
ExplanationFibroblasts are primarily responsible for secreting extracellular matrix components, including collagen and elastin.
#12
Which connective tissue type provides a smooth surface for movement at articulations?
Hyaline cartilage
ExplanationHyaline cartilage provides a smooth surface for articulation in joints, reducing friction.
#13
Which connective tissue type is found in the walls of large arteries?
Elastic connective tissue
ExplanationElastic connective tissue in large arteries provides elasticity, maintaining blood pressure.
#14
Which type of connective tissue serves as a framework for the liver, spleen, and lymph nodes?
Reticular tissue
ExplanationReticular tissue serves as a framework in lymphoid organs, supporting various cells.
#15
Which cells are responsible for the synthesis and degradation of the extracellular matrix in bone tissue?
Osteoblasts
ExplanationOsteoblasts synthesize and deposit bone matrix, while osteoclasts break it down in bone remodeling.
#16
Which connective tissue type forms the dermis of the skin?
Dense irregular connective tissue
ExplanationDense irregular connective tissue forms the dermis, providing strength and support.
#17
Which vitamin is required for the synthesis of hydroxyproline, an amino acid found abundantly in collagen?
Vitamin C
ExplanationVitamin C is essential for hydroxylation of proline to form hydroxyproline in collagen synthesis.
#18
What is the primary function of chondrocytes in cartilage tissue?
Maintaining the extracellular matrix
ExplanationChondrocytes maintain the extracellular matrix of cartilage tissue, ensuring its structure and function.
#19
Which connective tissue type is responsible for providing support and flexibility to the external ear?
Elastic cartilage
ExplanationElastic cartilage provides support and flexibility to structures like the external ear.
#20
Which specialized connective tissue type contains cells called osteocytes?
Bone tissue
ExplanationBone tissue contains osteocytes, embedded in a mineralized matrix, contributing to bone maintenance.
#21
What is the role of ground substance in connective tissue?
Binds cells and fibers together
ExplanationGround substance binds cells and fibers together, providing support and facilitating nutrient exchange.
#22
What type of connective tissue is the stroma of lymphoid organs primarily composed of?
Reticular tissue
ExplanationReticular tissue forms the stroma of lymphoid organs, providing structural support.
#23
Which glycoprotein is responsible for binding cells to the extracellular matrix in connective tissue?
Fibronectin
ExplanationFibronectin is a glycoprotein facilitating cell adhesion to the extracellular matrix in connective tissue.
#24
What is the most abundant protein in the human body?
Collagen
ExplanationCollagen is the most abundant protein in the human body, providing structural support.
#25
Which connective tissue component provides resistance to compression in cartilage?
Chondroitin sulfate
ExplanationChondroitin sulfate provides resistance to compression in cartilage, maintaining its integrity.