Bone Histology and Function Quiz

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60 Questions

Calcium triggers muscle contraction by binding to ______, allowing actin and myosin to interact.

troponin

Anaerobic respiration does not require oxygen and produces ______ acid, while aerobic respiration requires oxygen and produces ATP more efficiently.

lactic

A motor unit consists of a motor neuron and the muscle fibers it ______.

innervates

Muscle fatigue is the decline in muscle performance due to prolonged or intense ______.

activity

Oxygen debt is the oxygen required to restore normal metabolic function after ______.

exercise

Intercalated disks are found in cardiac muscle and help synchronize the contraction of cardiac muscle ______.

cells

Histology of Bone: The histology of bone includes osteocytes, osteoblasts, and ______ within a matrix of collagen and mineral salts.

osteoclasts

Function of Salts and Collagen Fibers: Salts provide hardness and strength to bones, while collagen fibers provide flexibility and ______.

resilience

Types of Bone Cells: The four types of bone cells are osteocytes, osteoblasts, osteoclasts, and bone lining ______.

cells

Compact vs. Spongy Bone: Compact bone is dense and solid, while spongy bone is porous and filled with ______.

marrow

Bone Anatomy (Epiphysis, Diaphysis, Epiphyseal Plate): Epiphysis is the end of a long bone, diaphysis is the shaft, and the epiphyseal plate is the ______ plate.

growth

Factors Affecting Bone Growth: Factors affecting bone growth include genetics, hormones, nutrition, and physical ______.

activity

The __________ of bone includes osteocytes, osteoblasts, and osteoclasts within a matrix of collagen and mineral salts.

histology

Salts provide hardness and strength to bones, while collagen fibers provide flexibility and __________.

resilience

The four types of bone cells are osteocytes, osteoblasts, osteoclasts, and bone lining __________.

cells

Compact bone is dense and solid, while spongy bone is porous and filled with __________.

marrow

Epiphysis is the end of a long bone, diaphysis is the __________, and the epiphyseal plate is the growth plate.

shaft

Factors affecting bone growth include genetics, hormones, nutrition, and physical __________.

activity

Osteocytes are mature bone cells that maintain the bone matrix, detect mechanical stress on the bone, and communicate with other bone cells to regulate bone ______.

remodeling

Osteoblasts are bone-forming cells responsible for the synthesis and deposition of new bone matrix. They play a crucial role in bone growth, repair, and ______.

mineralization

Osteoclasts are bone-resorbing cells that break down bone tissue by secreting enzymes and acids to dissolve the mineralized matrix. They are essential for bone remodeling and maintaining calcium balance in the ______.

body

Bone Lining Cells are inactive osteoblasts that cover the bone surfaces and regulate the exchange of minerals between bone and blood. They can become active osteoblasts when needed for bone repair or ______.

remodeling

Intercalated disks are found in cardiac muscle and help synchronize the contraction of cardiac muscle cells. Each of these bone cells has a specific function in maintaining bone structure, integrity, and ______.

homeostasis

Oxygen debt is the oxygen required to restore normal metabolic function after exercise. Calcium triggers muscle contraction by binding to troponin, allowing actin and myosin to ______.

interact

The histology of bone includes osteocytes, osteoblasts, and osteoclasts within a matrix of collagen and ______ salts.

mineral

Salts provide hardness and strength to bones, while collagen fibers provide flexibility and ______.

resilience

Compact bone is dense and solid, while spongy bone is porous and filled with ______.

marrow

Epiphysis is the end of a long bone, diaphysis is the shaft, and the epiphyseal plate is the ______ plate.

growth

T-tubules are invaginations of the muscle cell membrane, the sarcoplasmic reticulum stores ______.

calcium

Muscle tissue is contractile, excitable, extensible, and ______.

elastic

Osteocytes are mature bone cells that maintain the bone matrix, detect mechanical stress on the bone, and communicate with other bone cells to regulate bone ______.

remodeling

Osteoclasts are bone-resorbing cells that break down bone tissue by secreting enzymes and acids to dissolve the mineralized matrix. They are essential for bone remodeling and maintaining calcium balance in the ______.

body

Bone lining cells are inactive osteoblasts that cover the bone surfaces and regulate the exchange of minerals between bone and blood. They can become active osteoblasts when needed for bone repair or ______.

remodeling

Epiphysis is the end of a long bone, diaphysis is the ______, and the epiphyseal plate is the growth plate.

shaft

Histology of Bone: The histology of bone includes osteocytes, osteoblasts, and ______ within a matrix of collagen and mineral salts.

osteoclasts

Compact vs. Spongy Bone: Compact bone is dense and solid, while spongy bone is porous and filled with ______.

pores

The ______ of bone includes osteocytes, osteoblasts, and osteoclasts within a matrix of collagen and mineral salts.

histology

______ provides hardness and strength to bones, while collagen fibers provide flexibility and resilience.

Salts

______ bone is dense and solid, while spongy bone is porous and filled with marrow.

Compact

Factors affecting bone growth include genetics, hormones, nutrition, and physical ______.

activity

Important minerals include calcium and phosphorus, vitamins include vitamin D, and hormones include growth hormone and ______.

estrogen

Muscle tissue is contractile, excitable, extensible, and ______.

elastic

Osteocytes are mature bone cells that maintain the bone matrix, detect mechanical stress on the bone, and communicate with other bone cells to regulate bone ______.

remodeling

Osteoblasts are bone-forming cells responsible for the synthesis and deposition of new bone matrix. They play a crucial role in bone growth, repair, and ______.

mineralization

Osteoclasts are bone-resorbing cells that break down bone tissue by secreting enzymes and acids to dissolve the mineralized matrix. They are essential for bone remodeling and maintaining calcium balance in the ______.

body

Bone lining cells are inactive osteoblasts that cover the bone surfaces and regulate the exchange of minerals between bone and blood. They can become active osteoblasts when needed for bone repair or ______.

remodeling

Intercalated disks are found in cardiac muscle and help synchronize the contraction of cardiac muscle cells. Each of these bone cells has a specific function in maintaining bone structure, integrity, and ______.

homeostasis

A motor unit consists of a motor neuron and the muscle fibers it ______.

innervates

Types of Bone Cells: The four types of bone cells are osteocytes, osteoblasts, osteoclasts, and bone lining ______.

cells

Calcium triggers muscle contraction by binding to _______, allowing actin and myosin to interact.

troponin

Oxygen debt is the oxygen required to restore normal metabolic function after ______.

exercise

Anaerobic respiration does not require oxygen and produces ______ acid, while aerobic respiration requires oxygen and produces ATP more efficiently.

lactic

Calcium triggers muscle contraction by binding to ______, allowing actin and myosin to interact.

troponin

A motor unit consists of a motor neuron and the muscle fibers it ______.

innervates

Anaerobic respiration does not require oxygen and produces ______ acid, while aerobic respiration requires oxygen and produces ATP more efficiently.

lactic

Intercalated disks are found in cardiac muscle and help synchronize the contraction of cardiac muscle cells. Each of these bone cells has a specific function in maintaining bone structure, integrity, and ______.

function

A motor unit consists of a motor neuron and the muscle fibers it ______.

innervates

Muscle fatigue is the decline in muscle performance due to prolonged or intense ______.

activity

Oxygen debt is the oxygen required to restore normal metabolic function after ______.

exercise

Intercalated disks are found in cardiac muscle and help synchronize the contraction of cardiac muscle ______.

cells

Study Notes

Histology of Bone

  • Bone tissue consists of osteocytes, osteoblasts, and osteoclasts within a matrix of collagen and mineral salts
  • Osteocytes: mature bone cells that maintain the bone matrix, detect mechanical stress, and communicate with other bone cells to regulate bone remodeling
  • Osteoblasts: bone-forming cells responsible for the synthesis and deposition of new bone matrix, crucial for bone growth, repair, and mineralization
  • Osteoclasts: bone-resorbing cells that break down bone tissue by secreting enzymes and acids to dissolve the mineralized matrix, essential for bone remodeling and maintaining calcium balance

Bone Anatomy

  • Compact bone: dense and solid
  • Spongy bone: porous and filled with marrow
  • Epiphysis: the end of a long bone
  • Diaphysis: the shaft of a long bone
  • Epiphyseal plate: the growth plate of a long bone

Factors Affecting Bone Growth

  • Genetics
  • Hormones
  • Nutrition
  • Physical activity

Important Minerals, Vitamins, and Hormones for Bones

  • Minerals: calcium and phosphorus
  • Vitamins: vitamin D
  • Hormones: growth hormone and estrogen

Properties of Muscle Tissue

  • Contractile
  • Excitable
  • Extensible
  • Elastic

Anatomy of Skeletal Muscle Fibers

  • Myofibrils composed of sarcomeres, which are the functional units of muscle contraction
  • Sarcomere: the basic unit of muscle contraction
  • T-tubules: invaginations of the muscle cell membrane
  • Sarcoplasmic reticulum: stores calcium
  • Filaments: proteins that generate force

Role of Calcium in Muscle Contraction

  • Calcium triggers muscle contraction by binding to troponin, allowing actin and myosin to interact

Cellular Respiration

  • Anaerobic respiration: does not require oxygen and produces lactic acid
  • Aerobic respiration: requires oxygen and produces ATP more efficiently

Motor Unit and Muscle Fatigue

  • Motor unit: a motor neuron and the muscle fibers it innervates
  • Muscle fatigue: decline in muscle performance due to prolonged or intense activity
  • Oxygen debt: oxygen required to restore normal metabolic function after exercise

Types of Muscle Contraction

  • Isotonic contractions: involve muscle length changes
  • Isometric contractions: do not change muscle length
  • Concentric contractions: shorten the muscle
  • Eccentric contractions: lengthen the muscle

Types of Muscle Fibers

  • Slow oxidative fibers
  • Fast oxidative-glycolytic fibers
  • Fast glycolytic fibers
  • Each type has distinct contractile properties and metabolic characteristics

Intercalated Disks

  • Found in cardiac muscle
  • Help synchronize the contraction of cardiac muscle cells

Test your knowledge on the histology of bone, the function of salts and collagen fibers in bone structure, types of bone cells, and the differences between compact and spongy bone.

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