CORRECT WELL DETAILED ANSWERS|LATEST
UPDATE!!!2025/2026|GUARANTEED
Functions of bones — Support - ANSWER Holds up the body and cradles organs.
Functions of bones — Protection - ANSWER Skull and vertebrae protect the central
nervous system; rib cage protects thoracic and upper abdominal organs.
Functions of bones — Attachment point - ANSWER Skeletal muscles attach to bones
via tendons.
Functions of bones — Storage (minerals) - ANSWER Bone stores mineral salts such as
calcium and phosphate.
Functions of bones — Storage (fat) - ANSWER Yellow marrow in adult bones stores
lipids as an energy reserve.
Functions of bones — Blood cell formation (hematopoiesis) - ANSWER Formation of
blood cells in red bone marrow.
Functions of bones — Hormone production - ANSWER Osteocalcin regulates insulin
release, glucose homeostasis, and energy expenditure.
Cartilage — Key properties - ANSWER Strong, resilient, high water content, avascular,
and aneural; surrounded by vascularized perichondrium.
1
,Perichondrium - ANSWER Fibrous connective tissue surrounding cartilage; contains
blood vessels and resists outward expansion.
Hyaline cartilage — Fibers - ANSWER Collagen fibers; most abundant cartilage type.
Hyaline cartilage — Articular cartilage - ANSWER Covers epiphyses at synovial joint
surfaces.
Hyaline cartilage — Costal cartilage - ANSWER Connects ribs to the sternum at the
anterior thorax.
Hyaline cartilage — Respiratory cartilage - ANSWER Laryngeal cartilages, tracheal
rings, and bronchi.
Hyaline cartilage — Nasal cartilage - ANSWER External nose and nasal septum
support.
Elastic cartilage — Fibers - ANSWER Abundant elastic fibers; flexible and resilient.
Elastic cartilage — External ear - ANSWER Auricle (pinna) of the ear.
Elastic cartilage — Epiglottis - ANSWER Leaf-shaped cartilage at entrance of the larynx.
Fibrocartilage — Structure - ANSWER Rows of chondrocytes alternating with thick
collagen bundles; compressible with high tensile strength.
Fibrocartilage — Intervertebral discs - ANSWER Pads between vertebral bodies.
Fibrocartilage — Knee - ANSWER Menisci within the tibiofemoral joint.
2
,Fibrocartilage — Pubic symphysis - ANSWER Midline joint uniting left and right pubic
bones.
Cartilage growth — Appositional - ANSWER New matrix laid down by cells under the
perichondrium on the surface; cartilage grows wider.
Cartilage growth — Interstitial - ANSWER Chondrocytes divide and secrete matrix
within cartilage; cartilage expands from within.
Skeleton — Axial skeleton - ANSWER Skull, vertebral column, and ribs; provides
support and protection of central axis and viscera.
Skeleton — Appendicular skeleton - ANSWER Limbs and girdles; allows movement and
manipulation.
Bone shapes — Long bones - ANSWER Longer than wide; most limb bones.
Bone shapes — Short bones - ANSWER Cube-shaped (carpals, tarsals); sesamoids form
in tendons.
Bone shapes — Flat bones - ANSWER Thin, flat, sometimes curved (sternum, scapulae,
ribs, cranial bones).
Bone shapes — Irregular bones - ANSWER Complex shapes (vertebrae, hip bones).
Bone tissue layers — Compact (lamellar) bone - ANSWER Dense outer layer; looks
smooth and solid.
3
, Bone tissue layers — Spongy (trabecular) bone - ANSWER Internal network of
trabeculae with marrow in spaces.
Trabeculae alignment - ANSWER Oriented along lines of stress to resist loads
efficiently.
Flat/short/irregular bone structure - ANSWER Thin plates of spongy bone sandwiched
by compact bone; marrow around trabeculae, no large medullary cavity.
Long bone — Diaphysis - ANSWER Shaft with compact "collar" surrounding medullary
cavity.
Long bone — Epiphysis - ANSWER Bone ends; compact outside, spongy inside;
covered by articular cartilage.
Long bone — Periosteum - ANSWER Vascular, innervated membrane covering external
bone (except at articular cartilage).
Long bone — Endosteum - ANSWER Membrane lining internal surfaces and canals;
contains osteoprogenitors.
Long bone — Blood supply - ANSWER Nutrient artery/vein for diaphysis; epiphyseal
vessels for epiphyses; nerves accompany vessels.
Osteon (Haversian system) - ANSWER Structural unit of compact bone; concentric
lamellae resist stress.
Lamellae — Collagen orientation - ANSWER Collagen runs opposite directions in
adjacent lamellae to resist torsion.
4
UPDATE!!!2025/2026|GUARANTEED
Functions of bones — Support - ANSWER Holds up the body and cradles organs.
Functions of bones — Protection - ANSWER Skull and vertebrae protect the central
nervous system; rib cage protects thoracic and upper abdominal organs.
Functions of bones — Attachment point - ANSWER Skeletal muscles attach to bones
via tendons.
Functions of bones — Storage (minerals) - ANSWER Bone stores mineral salts such as
calcium and phosphate.
Functions of bones — Storage (fat) - ANSWER Yellow marrow in adult bones stores
lipids as an energy reserve.
Functions of bones — Blood cell formation (hematopoiesis) - ANSWER Formation of
blood cells in red bone marrow.
Functions of bones — Hormone production - ANSWER Osteocalcin regulates insulin
release, glucose homeostasis, and energy expenditure.
Cartilage — Key properties - ANSWER Strong, resilient, high water content, avascular,
and aneural; surrounded by vascularized perichondrium.
1
,Perichondrium - ANSWER Fibrous connective tissue surrounding cartilage; contains
blood vessels and resists outward expansion.
Hyaline cartilage — Fibers - ANSWER Collagen fibers; most abundant cartilage type.
Hyaline cartilage — Articular cartilage - ANSWER Covers epiphyses at synovial joint
surfaces.
Hyaline cartilage — Costal cartilage - ANSWER Connects ribs to the sternum at the
anterior thorax.
Hyaline cartilage — Respiratory cartilage - ANSWER Laryngeal cartilages, tracheal
rings, and bronchi.
Hyaline cartilage — Nasal cartilage - ANSWER External nose and nasal septum
support.
Elastic cartilage — Fibers - ANSWER Abundant elastic fibers; flexible and resilient.
Elastic cartilage — External ear - ANSWER Auricle (pinna) of the ear.
Elastic cartilage — Epiglottis - ANSWER Leaf-shaped cartilage at entrance of the larynx.
Fibrocartilage — Structure - ANSWER Rows of chondrocytes alternating with thick
collagen bundles; compressible with high tensile strength.
Fibrocartilage — Intervertebral discs - ANSWER Pads between vertebral bodies.
Fibrocartilage — Knee - ANSWER Menisci within the tibiofemoral joint.
2
,Fibrocartilage — Pubic symphysis - ANSWER Midline joint uniting left and right pubic
bones.
Cartilage growth — Appositional - ANSWER New matrix laid down by cells under the
perichondrium on the surface; cartilage grows wider.
Cartilage growth — Interstitial - ANSWER Chondrocytes divide and secrete matrix
within cartilage; cartilage expands from within.
Skeleton — Axial skeleton - ANSWER Skull, vertebral column, and ribs; provides
support and protection of central axis and viscera.
Skeleton — Appendicular skeleton - ANSWER Limbs and girdles; allows movement and
manipulation.
Bone shapes — Long bones - ANSWER Longer than wide; most limb bones.
Bone shapes — Short bones - ANSWER Cube-shaped (carpals, tarsals); sesamoids form
in tendons.
Bone shapes — Flat bones - ANSWER Thin, flat, sometimes curved (sternum, scapulae,
ribs, cranial bones).
Bone shapes — Irregular bones - ANSWER Complex shapes (vertebrae, hip bones).
Bone tissue layers — Compact (lamellar) bone - ANSWER Dense outer layer; looks
smooth and solid.
3
, Bone tissue layers — Spongy (trabecular) bone - ANSWER Internal network of
trabeculae with marrow in spaces.
Trabeculae alignment - ANSWER Oriented along lines of stress to resist loads
efficiently.
Flat/short/irregular bone structure - ANSWER Thin plates of spongy bone sandwiched
by compact bone; marrow around trabeculae, no large medullary cavity.
Long bone — Diaphysis - ANSWER Shaft with compact "collar" surrounding medullary
cavity.
Long bone — Epiphysis - ANSWER Bone ends; compact outside, spongy inside;
covered by articular cartilage.
Long bone — Periosteum - ANSWER Vascular, innervated membrane covering external
bone (except at articular cartilage).
Long bone — Endosteum - ANSWER Membrane lining internal surfaces and canals;
contains osteoprogenitors.
Long bone — Blood supply - ANSWER Nutrient artery/vein for diaphysis; epiphyseal
vessels for epiphyses; nerves accompany vessels.
Osteon (Haversian system) - ANSWER Structural unit of compact bone; concentric
lamellae resist stress.
Lamellae — Collagen orientation - ANSWER Collagen runs opposite directions in
adjacent lamellae to resist torsion.
4
