The fibrous envelope enclosing synovial articulations may display regional thickening to constitute:
Show answer Hide answer
Answer: B. Ligaments.
Explanation
Synovial joints are surrounded by tough fibrous capsules that protect internal cavity structures. Specific regions of this enclosing envelope display significant structural thickening over time. These regional thickenings organize into strong stabilizing bands known biologically as ligaments. Ligaments connect bones to other bones to stabilize skeletal joints during physical movement. Dense regular connective tissue forms these resilient bands to withstand high tensile loads. Synovial fluid lubricates the joint cavity to reduce friction between moving skeletal elements.
Athletic trainers focus heavily on strengthening joint ligaments to prevent sports injuries. Torn ligaments often require surgical reconstruction to restore normal joint stability and function. Joint flexibility and stability depend on the precise arrangement of these fibrous reinforcements. Synovial membranes secrete lubricating fluid inside joint capsules rather than forming thick bands. Muscles actively contract to move skeletal levers rather than serving as joint capsule thickenings. Tendons connect skeletal muscles directly to bones instead of thickening joint capsules.
Related questions
Q1. Ferns find their classification under__________?
Show answer Hide answer
Answer: D. Pteropsida
Ferns are vascular plants that possess complex organ systems including true roots and leaves. Taxonomic classification places these spore-producing vascular plants within the major group Pteropsida. Pteropsida encompasse...
Q2. The protective shell of a marine snail is constructed from________________?
Show answer Hide answer
Answer: B. CaCO3
Marine snails secrete mineralized compounds to construct hard, protective external shells. Calcium carbonate is the primary chemical substance deposited to form these durable structures. This mineral matrix provides robu...
Q3. Extracellular matrix structural fibers serve as a hallmark of_______________?
Show answer Hide answer
Answer: D. Fluid mosaic model of cell membrane
The fluid mosaic model describes cell membranes as dynamic phospholipid bilayers with embedded proteins. Extracellular matrix interactions and structural fibers anchor to membrane proteins in this model. Structural compo...
Q4. The ultimate recipient of electrons along the respiratory chain is____________?
Show answer Hide answer
Answer: D. Oxygen
Aerobic respiration extracts energy from nutrient molecules through a series of redox reactions. Molecular oxygen has a high electronegativity that pulls electrons through the transport chain. Therefore, oxygen serves as...
Q5. Investigations regarding chromosomal DNA molecules to understand hereditary pathology foundations were carried out by?
Show answer Hide answer
Answer: A. Molecular biologists
Molecular biologists study the structure and function of biological macromolecules like DNA. Investigations into chromosomal DNA help researchers uncover the molecular basis of diseases. These scientific inquiries reveal...
Q6. The excretory apparatus of platyhelminths is comprised of___________?
Show answer Hide answer
Answer: B. Flame cells
Platyhelminths possess specialized tubular networks for internal waste excretion and osmoregulation. These primitive excretory systems feature specialized flagellated cells known as flame cells. The beating flagella rese...