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Ch. 4 Histology
Amerman - Human Anatomy & Physiology 2nd Edition
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822당신이 사용하는 게 아니라요?교과서 변경
4장, 문제 9e

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The ECM of bone tissue consists exclusively of calcium phosphate crystals.

검증된 단계별 안내
1
Understand the question: The problem asks whether the extracellular matrix (ECM) of bone tissue consists exclusively of calcium phosphate crystals. If the statement is false, we need to correct it to make it true.
Recall the composition of the ECM in bone tissue: The ECM of bone tissue is composed of both organic and inorganic components. The organic component includes collagen fibers (primarily type I collagen), which provide tensile strength, while the inorganic component includes calcium phosphate crystals (in the form of hydroxyapatite), which provide compressive strength.
Evaluate the statement: The statement claims that the ECM consists exclusively of calcium phosphate crystals. This is incorrect because the ECM also contains organic components like collagen fibers.
Correct the false statement: A true statement would be: 'The ECM of bone tissue consists of both organic components (such as collagen fibers) and inorganic components (such as calcium phosphate crystals).'
Summarize the process: To determine the truth of such statements, always consider the full composition of the structure or tissue in question, and ensure that all components are accounted for in the description.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Extracellular Matrix (ECM)

The extracellular matrix (ECM) is a complex network of proteins and carbohydrates that provides structural and biochemical support to surrounding cells. In bone tissue, the ECM is not only composed of mineral components but also includes organic materials such as collagen fibers, which contribute to the tissue's strength and flexibility.
추천 영상:

Calcium Phosphate in Bone

Calcium phosphate is a primary mineral component of bone, providing rigidity and strength. However, it is not the sole component of the bone ECM; it works in conjunction with organic materials like collagen and non-collagenous proteins, which play critical roles in bone formation and maintenance.
추천 영상:

Bone Tissue Composition

Bone tissue is a dynamic structure composed of both organic and inorganic components. The organic matrix, primarily collagen, accounts for about 30% of bone mass, while the inorganic matrix, mainly calcium phosphate, constitutes about 70%. This combination allows bones to be both strong and resilient.
추천 영상:
가이드 코스
02:48
Specialized Connective Tissue: Bone Example 1
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교과서 질문

Which of the following statements about muscle tissue is false?

a. Smooth muscle tissue is involuntary, and the cells are nonstriated.

b. Cardiac muscle tissue is involuntary, and the cells are striated.

c. Skeletal muscle fibers are joined by intercalated discs.

d. Skeletal muscle fibers are long and cylindrical striated cells.

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교과서 질문

Match the following types of connective tissue with their correct location(s). 

Hyaline cartilage           

Elastic cartilage           

Smooth muscle           

Dense irregular connective tissue           

Fibrocartilage

Cardiac muscle

Dense regular elastic tissue

Reticular connective tissue 

a. Dermis, surrounding joints, organs

b. Most hollow organs, eye, skin

c. Large arteries, certain ligaments

d. Ear and epiglottis

e. Lymph nodes, spleen, liver

f. Freely moveable joints

g. Intervertebral discs, knee joint

h. Heart

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교과서 질문

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

Fibrocartilage provides a smooth surface on which bones may articulate with little friction.

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교과서 질문

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

Adipose tissue functions in insulation, warmth, protection, and shock absorption and is the major energy reserve in the body.

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교과서 질문

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

Loose connective tissue features protein fibers as its primary component.

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교과서 질문

____are the cells of nervous tissue that send and receive messages, and ____ are the supporting cells of nervous tissue.

An ____ carries a nerve impulse toward a neuron cell body, and a(n) ____carries a nerve impulse away from a neuron cell body.

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