Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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20 µm
60 µm
600 µm
240 µm
![### Human Cheek Epithelial Cells
**Question:** These cells are human cheek epithelial cells. What is their approximate cell size?
#### Microscope Image Analysis
The image above shows a magnified view of human cheek epithelial cells. Each cell appears as a distinct, irregularly shaped structure stained in purple, indicating the presence of a nucleus in the center.
**Field Diameter Measurement:**
- The field diameter of the microscope view is given as 240 micrometers (μm).
##### Estimation of Cell Size:
1. **Field Diameter Insight:** The black circle drawn on the image represents the entire field of view under the microscope, which has a diameter of 240 μm.
2. **Counting Cells:** By observing the number of epithelial cells that fit within this field of diameter, we can estimate the cell size. On average, it looks like about 2-3 cells align across the diameter.
Calculating Approximate Size:
- Dividing the field diameter (240 μm) by the estimated number of cells across the diameter (which is approximately 2-3 cells), we get an approximate size for each cell.
\[ \text{Cell Size} \approx \frac{240 \, \mu m}{2.5} = 96 \, \mu m \]
Thus, the approximate size of each human cheek epithelial cell is about 96 micrometers (μm).
**Note:** This estimation may vary depending on cell shape and exact alignment, but it gives a rough size measurement based on the provided field diameter.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3bdcb517-33ff-466e-a854-9cedbbd09bff%2F27008e47-d978-403e-848a-e3b2856c9d6f%2Fr605ws_processed.png&w=3840&q=75)
Transcribed Image Text:### Human Cheek Epithelial Cells
**Question:** These cells are human cheek epithelial cells. What is their approximate cell size?
#### Microscope Image Analysis
The image above shows a magnified view of human cheek epithelial cells. Each cell appears as a distinct, irregularly shaped structure stained in purple, indicating the presence of a nucleus in the center.
**Field Diameter Measurement:**
- The field diameter of the microscope view is given as 240 micrometers (μm).
##### Estimation of Cell Size:
1. **Field Diameter Insight:** The black circle drawn on the image represents the entire field of view under the microscope, which has a diameter of 240 μm.
2. **Counting Cells:** By observing the number of epithelial cells that fit within this field of diameter, we can estimate the cell size. On average, it looks like about 2-3 cells align across the diameter.
Calculating Approximate Size:
- Dividing the field diameter (240 μm) by the estimated number of cells across the diameter (which is approximately 2-3 cells), we get an approximate size for each cell.
\[ \text{Cell Size} \approx \frac{240 \, \mu m}{2.5} = 96 \, \mu m \]
Thus, the approximate size of each human cheek epithelial cell is about 96 micrometers (μm).
**Note:** This estimation may vary depending on cell shape and exact alignment, but it gives a rough size measurement based on the provided field diameter.
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