A&P Question on Levels of Organization

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Specializes in CNA.

We are using the 13th edition of Hole's Human Anatomy & Physiology. In the book it states there are 10 levels of organization in which the human body is composed. I follow the book and totally understand.

Subatomic particles

Atom

Molecule

Macromolecule

Organelle

Cell

Tissue

Organ

Organ system

Organism

When I get to the Lab manual it states there are 6!

Chemical level

Cellular level

Tissue level

Organ level

System level

Organism

Which one does Chemical level fit in? I am blown away because my notes don't even match because according to her (the instructor) PowerPoint there are 9 levels of biological organization starting at the simplest to its most complex form. Her list starts where the book does but leaves out macromolecule.

HELP! ??

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Chemical level would include macromolecules, molecules, atoms and subatomic particles. My book (Saladin) doesn't list chemical level, but that would be more along the lines of chemistry.

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Specializes in CNA.

Thank you so much @goldenanchor I was so afraid I was confused.

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Specializes in CNA.
Chemical level would include macromolecules, molecules, atoms and subatomic particles. My book (Saladin) doesn't list chemical level, but that would be more along the lines of chemistry.

You are a lifesaver! ??

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Pages 12-13: 1.3 Levels of Organization & Figure 1.3 and Table 1.4

I think the issue is that the book and your notes don't make it clear that each level includes a solitary structure except the chemical level which is comprised of 5 different structures.

Chemical Level: subatomic particles (elections, neutrons); atoms (hydrogen, nitrogen); molecules (water molecule, glucose); macromolecules (protein, DNA); organelles (nucleus, mitochondrial)

Cellular Level: cells (muscle cell, brain cell)

Tissue Level: tissue (epithelial tissue, smooth muscle tissue)

Organ Level: organs (heart, femur)

Organ System Level: organ systems (skeletal, muscular)

Organism Level: Human

Hope this helps!

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Looks like golden beat me to it - Glad you are on the right track! :)

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Specializes in CNA.
Pages 12-13: 1.3 Levels of Organization & Figure 1.3 and Table 1.4

I think the issue is that the book and your notes don't make it clear that each level includes a solitary structure except the chemical level which is comprised of 5 different structures.

Chemical Level: subatomic particles (elections, neutrons); atoms (hydrogen, nitrogen); molecules (water molecule, glucose); macromolecules (protein, DNA); organelles (nucleus, mitochondrial)

Cellular Level: cells (muscle cell, brain cell)

Tissue Level: tissue (epithelial tissue, smooth muscle tissue)

Organ Level: organs (heart, femur)

Organ System Level: organ systems (skeletal, muscular)

Organism Level: Human

Hope this helps!

It does. Thanks!

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We are using the 13th edition of Hole's Human Anatomy & Physiology. In the book it states there are 10 levels of organization in which the human body is composed. I follow the book and totally understand. Subatomic particles Atom Molecule Macromolecule Organelle Cell Tissue Organ Organ system Organism When I get to the Lab manual it states there are 6! Chemical level Cellular level Tissue level Organ level System level Organism Which one does Chemical level fit in? I am blown away because my notes don't even match because according to her (the instructor) PowerPoint there are 9 levels of biological organization starting at the simplest to its most complex form. Her list starts where the book does but leaves out macromolecule. HELP! dde31dde13

Your using the same book I used. My wife loaned it out to a friend so I can't help much, but from what I recall, your question was answered correctly above :)

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Specializes in CNA.
Your using the same book I used. My wife loaned it out to a friend so I can't help much, but from what I recall, your question was answered correctly above :)

Thanks. I'm glad to have the clarification.

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