The exterior surface of skeletal bone is wrapped in a fibrous connective tissue sheath named ___________ ?
Show answer Hide answer
Answer: A. Periosteum
Explanation
The periosteum forms a dense, specialized fibrous membrane completely wrapping the exterior bone surface. It provides vital attachment sites for tendons and ligaments that facilitate bodily movement. This sheath contains blood vessels and cellular layers essential for bone growth and repair. Bones are rigid living organs that provide structural support and protect vital internal organs. Connective tissues consist of cells embedded within an extracellular matrix rich in protein fibers. The outer layer of the periosteum is fibrous, while the inner layer contains osteogenic cells.
Understanding bone anatomy helps medical professionals diagnose fractures and plan orthopedic surgical procedures. The periosteum plays a crucial role in healing broken bones by supplying new bone-forming cells. Surgical detachment of this membrane can severely impair blood supply and subsequent bone healing. Woven bone is immature bone tissue characterized by a haphazard arrangement of collagen fibers. Epithelium lining covers internal and external body surfaces rather than acting as a bone sheath. Connective lining is a general descriptive term lacking the precise anatomical specificity of periosteum.
Related questions
Q1. Which criterion fails to apply to a scientifically productive theory?
Show answer Hide answer
Answer: C. It discourages suggestion of different hypotheses
A scientifically productive theory must actively stimulate new hypotheses and ongoing scientific research. Discouraging the suggestion of different hypotheses stifles scientific inquiry and intellectual progress. Therefo...
Q2. An open circulatory system may feature circulating fluid containing_________?
Show answer Hide answer
Answer: B. White Blood Cells
Open circulatory systems feature a circulating fluid known as hemolymph bathing internal organs. Functional white blood cells called hemocytes circulate within this fluid for immune defense. These white blood cells prote...
Q3. Posterior pituitary hormones exert their primary physiological effects upon which target site?
Show answer Hide answer
Answer: D. Collecting tubules
Posterior pituitary hormones like antidiuretic hormone act primarily on the nephron collecting tubules. They increase water permeability in the collecting ducts to promote water reabsorption into blood. This targeted phy...
Q4. Oxygen accounts for what proportion of total human body mass percentage__________?
Show answer Hide answer
Answer: A. 65%
Oxygen atoms possess a high atomic mass compared to other common biological elements. Water molecules consist of one oxygen atom bonded to two lighter hydrogen atoms. Because water dominates body mass, the heavy oxygen a...
Q5. Oxygen constitutes approximately ____ % of aggregate human bodily mass?
Show answer Hide answer
Answer: A. 65%
Oxygen accounts for sixty-five percent of the total mass of the human body. This high percentage occurs because water molecules, which contain oxygen, make up most tissues. The large atomic weight of oxygen relative to h...
Q6. External to the Marchantia thallus, specialized receptive structures termed__________ are found?
Show answer Hide answer
Answer: B. rhizoids
Marchantia thallus features thread-like rhizoids extending from its lower surface into the substrate. These specialized structures anchor the flattened plant body securely to the ground below. Rhizoids also assist in the...