A&P I Chapter 6: Skeletal System Study Guide – Step-by-Step Guidance

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Study Guide - Smart Notes

Tailored notes based on your materials, expanded with key definitions, examples, and context.

Q1. Which of the following is not a function of the skeletal system?

Background

Topic: Functions of the Skeletal System

This question tests your understanding of the main roles played by the skeletal system in the human body.

Key Terms:

Skeletal system
Mineral storage
Red and yellow bone marrow
Support, protection, movement

Step-by-Step Guidance

Read each option carefully and recall the main functions of the skeletal system as discussed in your textbook or lectures.
Identify which options are true functions (e.g., support, protection, movement, blood cell production, mineral storage).
Look for the option that does not match the known functions of the skeletal system, especially focusing on the minerals mentioned.
Eliminate the options that are correct functions, leaving the one that is not.

Try solving on your own before revealing the answer!

Q2. Match the following terms with the correct definition.

Background

Topic: Bone Structure Terminology

This question checks your knowledge of the anatomy of bones and the definitions of key terms related to bone structure.

Key Terms:

Long bone, Epiphysis, Nutrient artery, Flat bone, Short bone, Periosteum, Diaphysis, Medullary cavity

Step-by-Step Guidance

Review the definitions of each bone structure term in your notes or textbook.
Match each term to the definition that best fits its description (e.g., "shaft of a long bone" matches with "diaphysis").
Be careful with terms that sound similar (e.g., epiphysis vs. diaphysis).
Double-check your matches to ensure each term is used only once.

Try matching each term before checking the answer!

Q3. Explain the differences between red bone marrow and yellow bone marrow.

Background

Topic: Bone Marrow Types and Functions

This question asks you to compare and contrast the two main types of bone marrow found in bones.

Key Terms:

Red bone marrow: hematopoiesis, location
Yellow bone marrow: fat storage, location

Step-by-Step Guidance

Define red bone marrow and describe its primary function in the body.
Define yellow bone marrow and describe its main role.
Explain where each type is typically found in the body (e.g., children vs. adults).
Discuss how the composition and function of bone marrow can change with age.

Try writing your explanation before revealing the answer!

Q4. Mark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.

Background

Topic: Bone Tissue Composition and Cell Types

This question tests your understanding of the components of bone tissue and the roles of different bone cells.

Key Terms:

Hydroxyapatite, inorganic matrix, collagen fibers, osteoblasts, osteoclasts, osteocytes

Step-by-Step Guidance

Read each statement carefully and recall the correct facts about bone tissue composition and cell functions.
For each statement, decide if it is true or false based on your knowledge.
If a statement is false, identify the incorrect part and rewrite it to make it true.
Pay special attention to which cells perform which functions (e.g., bone deposition vs. resorption).

Try marking each statement before checking the answer!

Q5. Fill in the blanks: The subunit of compact bone is the ___. It consists of rings of bone matrix called _ that surround a structure called the _ that contains blood vessels and nerves. Other structures called _ also contain blood vessels and nerves. Osteocytes are housed in _ and communicate via ___.

Background

Topic: Microscopic Structure of Compact Bone

This question tests your knowledge of the organization of compact bone at the microscopic level.

Key Terms:

Osteon, lamellae, central canal, perforating canals, lacunae, canaliculi

Step-by-Step Guidance

Recall the basic unit of compact bone and its structural components.
Identify the terms that describe the rings, central passage, and other channels in bone tissue.
Remember where osteocytes are located and how they communicate with each other.
Fill in each blank with the correct anatomical term.

Try filling in the blanks before revealing the answer!

Q6. The branching pieces of bone in spongy bone are called:

Background

Topic: Structure of Spongy Bone

This question asks you to identify the name of the structures that make up spongy bone.

Key Terms:

Trabeculae, lamellae, lacunae, osteoclasts

Step-by-Step Guidance

Review the structure of spongy bone and the terminology used to describe its components.
Recall which term refers to the lattice-like network found in spongy bone.
Eliminate options that refer to cells or other structures not unique to spongy bone.

Try selecting the correct answer before revealing it!

Q7. Which bones form via intramembranous ossification?

Background

Topic: Bone Development (Ossification)

This question tests your understanding of the types of bones and the processes by which they form during development.

Key Terms:

Intramembranous ossification, flat bones, long bones, short bones, irregular bones

Step-by-Step Guidance

Recall the definition of intramembranous ossification and which bones develop this way.
Review the types of bones (flat, long, short, irregular) and examples of each.
Identify which bones are formed by this process and which are not.
Consider if more than one type of bone is included in the answer choices.

Try answering before revealing the answer!

Q8. Of the following statements, identify those that are properties of intramembranous ossification, endochondral ossification, or both.

Background

Topic: Types of Bone Formation

This question asks you to distinguish between the two main processes of bone formation and their characteristics.

Key Terms:

Intramembranous ossification, endochondral ossification, hyaline cartilage model, ossification centers, mesenchyme membrane, bone collar

Step-by-Step Guidance

Review the steps and features of both intramembranous and endochondral ossification.
For each statement, decide if it applies to intramembranous, endochondral, or both processes.
Pay attention to keywords like "hyaline cartilage model" and "mesenchyme membrane."
Mark each statement accordingly.

Try categorizing each statement before revealing the answer!

Q9. What is the difference between a primary and secondary ossification center in a long bone?

Background

Topic: Bone Growth and Development

This question tests your understanding of how long bones grow and the role of ossification centers.

Key Terms:

Primary ossification center, secondary ossification center, diaphysis, epiphysis

Step-by-Step Guidance

Define what an ossification center is in the context of bone development.
Describe where the primary ossification center is located and when it forms.
Describe where the secondary ossification centers are located and when they form.
Compare the timing and location of these centers in long bone development.

Try explaining the difference before revealing the answer!

Q10. The part of the epiphysis that does not ossify during a person’s lifetime is the:

Background

Topic: Bone Structure and Ossification

This question asks you to identify which part of the epiphysis remains unossified throughout life.

Key Terms:

Epiphysis, articular surface, ossification

Step-by-Step Guidance

Recall the structure of the epiphysis and the function of each part.
Identify which part is covered with cartilage and why it does not ossify.
Eliminate options that refer to structures that do ossify.

Try selecting the correct answer before revealing it!

Q11. Long bones grow in length from the:

Background

Topic: Bone Growth in Length

This question tests your knowledge of where longitudinal bone growth occurs in long bones.

Key Terms:

Epiphyseal plate, diaphyseal line, medullary cavity

Step-by-Step Guidance

Recall the process of endochondral ossification and where new bone is added during growth.
Identify the structure responsible for lengthwise growth in long bones.
Eliminate options that are not involved in bone elongation.

Try answering before revealing the answer!

Q12. Correctly order the following steps of bone growth in length.

Background

Topic: Steps of Endochondral Ossification (Bone Growth in Length)

This question asks you to sequence the events that occur during the growth of long bones.

Key Terms:

Chondrocytes, proliferation, hypertrophy, calcification, ossification

Step-by-Step Guidance

Review the zones of the epiphyseal plate and the order in which chondrocytes undergo changes.
Identify which event happens first (e.g., cell division, enlargement, calcification, bone replacement).
Number each step in the correct sequence based on your understanding.

Try ordering the steps before revealing the answer!

Q13. Explain the effect that the following hormones have on growth of bone tissue: a) Growth hormone b) Testosterone c) Estrogen

Background

Topic: Hormonal Regulation of Bone Growth

This question tests your understanding of how different hormones influence bone growth and development.

Key Terms:

Growth hormone, testosterone, estrogen, bone growth, puberty

Step-by-Step Guidance

For each hormone, recall its main effect on bone tissue (e.g., stimulates growth, accelerates closure of growth plates).
Explain how each hormone affects bone cells and bone matrix.
Discuss any differences in effects between males and females, if relevant.

Try explaining each hormone's effect before revealing the answer!

Q14. Fill in the blanks: Bone deposition is carried out by ___, which secrete the _ of the ECM by exocytosis. They facilitate the formation of the _ of the ECM by secreting _ filled with calcium ions, enzymes, and ATP. Bone resorption is carried out by _, which secrete _ and _____ from their ruffled border.

Background

Topic: Bone Remodeling – Deposition and Resorption

This question tests your knowledge of the cells and processes involved in bone remodeling.

Key Terms:

Osteoblasts, osteoclasts, ECM, enzymes, acids, vesicles

Step-by-Step Guidance

Recall which cells are responsible for bone deposition and which for bone resorption.
Identify what substances are secreted during each process and their roles.
Fill in each blank with the correct cell or substance.

Try filling in the blanks before revealing the answer!

Q15. Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Background

Topic: Bone Remodeling and Calcium Homeostasis

This question tests your understanding of the triggers and regulation of bone remodeling and calcium balance.

Key Terms:

Bone resorption, bone deposition, calcitonin, parathyroid hormone, vitamin D

Step-by-Step Guidance

Read each statement and recall the correct physiological triggers and effects.
Decide if each statement is true or false based on your knowledge.
If false, identify the error and rewrite the statement to make it true.
Pay attention to which hormones increase or decrease blood calcium levels.

Try marking each statement before revealing the answer!

Q16. Correctly order the following steps of fracture repair.

Background

Topic: Bone Fracture Healing

This question asks you to sequence the events that occur during the repair of a bone fracture.

Key Terms:

Hematoma, soft callus, bone callus, remodeling

Step-by-Step Guidance

Recall the stages of bone healing after a fracture.
Identify which event happens first (e.g., bleeding, clot formation), and the subsequent steps (e.g., callus formation, remodeling).
Number each step in the correct sequence based on your understanding.

Try ordering the steps before revealing the answer!

Q17. Explain why surgeons now avoid damaging the periosteum during fracture repair, and what would likely happen to bone healing if the periosteum is missing.

Background

Topic: Role of the Periosteum in Bone Healing

This question tests your understanding of the importance of the periosteum in bone repair and regeneration.

Key Terms:

Periosteum, osteogenic cells, bone healing, fracture repair

Step-by-Step Guidance

Recall the structure and function of the periosteum, especially its inner osteogenic layer.
Explain how the periosteum contributes to bone healing after a fracture.
Discuss the consequences of removing or damaging the periosteum during surgery.

Try explaining before revealing the answer!

Q18. Fouz Akkad is a 6-year-old girl who has been diagnosed with a rare genetic defect in which her lysosomes are unable to maintain an acidic pH. What are lysosomes? Why do lysosomes require an acidic pH? How will this affect the ability of certain bone cells to function? What consequences will this disease have on Fouz’s bones?

Background

Topic: Lysosomes and Bone Cell Function

This question integrates cell biology (lysosomes) with bone physiology, focusing on how cellular defects can impact bone health.

Key Terms:

Lysosomes, acidic pH, osteoclasts, bone resorption, genetic defects

Step-by-Step Guidance

Define lysosomes and their general function in cells.
Explain why an acidic pH is necessary for lysosomal enzymes to function properly.
Identify which bone cells rely on lysosomal activity and how this affects bone resorption.
Predict the consequences for bone structure and health if lysosomal function is impaired in these cells.