M2: Tissues with Lab Image Identification

Question 1

Just some tips:

• ‘Epithelial shapes’ are defined by the plasma membrane (not the nucleus)
• When classifying, start large and then work small (in regards to categories and sub-categories)
• Know FULL NAME; e.g. “if you’re looking at adipose, you need to know this is connective tissue, in the proper category, loose in nature, and it’s adipose”

Question 2

What type of tissue is this?

Answer 2

Stratified Squamous Epithelial Tissue

Hint: look at the plasma membrane shape. It is very squished/squashed looking.

Question 3

What type of tissue is this?

Answer 3

Columnar Epithelial Tissue

Hint: Elongated column-like shape; no cilia

Question 4

What type of tissue is this?

Answer 4

Cuboidal Epithelial Tissue

Hint: square/cube-like plasma membrane shape

Side-note: mainly glanduar; those concentric rings are cuboidal cells making up glands/ducts

Question 5

What type of tissue is this?

Answer 5

Supportive__Connective Tissue__Fibrous Cartilage

(fibrous cartilage = fibrocartilage)

Hints/Characteristics: wavy lines (bunch of collagen fibers)

Question 6

What type of tissue is this?

Answer 6

Stratified Squamous Epithelial Tissue

Question 7

What type of tissue are red blood cells (erythrocytes), WBC (leukocytes), and platelets?

Answer 7

Fluid Connective Tissue

Question 8

What type of tissue is this?

Answer 8

Skeletal__Muscle Tissue

Note: big, multinucleated, obvious striations

cardiac muscle is branched, skeletal muscle is not

Question 9

Where is transitional epithelial tissue found?

Answer 9

bladder and ureters

• Bonus Notes:*
• • ureters are the tubes that transport urine from the kidney to the bladder*
• • translational epithelial is unusual because it tolerates cycles of stretching*

Question 10

What type of tissue is this?

Answer 10

Simple__Squamous__Epithelial Tissue

Question 11

What type of tissue is this?

Answer 11

Connective Tissue Proper Loose Areolar

Hints:

• presence of fibers but not many, so this is loose and not dense in nature.
• Some of the fibers are long/straight. So you can rule-out reticular, because reticular fibers have a branched/root-like system appearance.
• You can rule-out adipose, as adipose has no fibers.

Question 12

What type of tissue is this?

Answer 12

Connective Tissue Proper Dense Regular

Side Note: densely packed primarily parallel collagen fibers

Question 13

What type of tissue is this?

Answer 13

Connective Tissue Proper Loose Reticular

Hint: fibers are those dark lines; the pink stuff are just various cells. So if you strip away all those cells, you don’t have many fibers left; so this is loose.

Reticular fibers are branched, they have a root-like system appearance similar to roots or branches

Question 14

What type of tissue is this?

Answer 14

Nervous Tissue or more specifically Motor Neuron

• Bonus Side-Notes:*
• • the large purple body is the cell body of a nerve cell, which has extentions coming from it that are axons/dendrites*
• • motor neurons are in the PNS*

Question 15

Fill-in-the-blank

When classifying/describing tissue types by the number of layers:

simple = ____ layer

stratified = ______ layers

Answer 15

When classifying/describing tissue types by layers:

​simple = one layer

stratified = multiple layers

Question 16

What type of tissue is this?

Answer 16

Connective Tissue Supportive Compact Bone

Question 17

What type of tissue is this?

Answer 17

Connective Tissue Proper Loose Adipose

Question 18

What type of tissue is this?

Answer 18

Pseudostratified Ciliated Columnar Epithelial Tissue

Hint: looks similiar to columnar in it’s elongated shape, but the the give away/key-difference is all the cilia.

• Note: the professor once said he might use a different image, but if he did it would a be a better one that is more obvious*
• Reminder: review where found*

Question 19

What type of tissue is this?

Answer 19

Supportive Connective Tissue Elastic Cartilage

Hints: lots of (elastic) fibers weaved between the chondrocytes

Question 20

What type of tissue is this?

Answer 20

Supportive Connective Tissue Hyaline Cartilage

Side-Note: hyaline cartilage is the most common type of cartilage.

Hints/Notes:
(1) you see really spaced out areas between cells (this space is called the matrix). Hyaline cartilage has “fluidy” matrix, where there are no obvious fibers in between the cells. ​Good for adding cushioning.

Question 21

What type of tissue is this?

Answer 21

Cardiac__Muscle Tissue

Hints: branched, intercalated discs (those lines where cardiac cells connect)

Side-note: both cardiac and skeletal muscle have striations, but skeletal muscle cells are much larger with very obvious striations

Question 22

What are the three types of Connective Tissue Proper that are Loose in nature?

Answer 22

areolar

reticular

adipose

Question 23

Fill-in-the-blanks to finish the names of the epithelial tissue in the figure. (Click image to enlarge)

Answer 23

1 Simple Squamous

(Click image to enlarge)

Question 24

1. Where is simple squamous epithelial tissue found?
2. Where is stratified squamous epithelial tissue found?

Answer 24

1. simple squamous epithelia: lines blood vessels & air sacs in the lungs (aka alveoli or alveolar sacs)
2. stratified squamous epithelia: the epidermis; outer layers of skin, mouth, vagina

Question 25

Hyaline cartilage and adipose tissue both fall under what main category of tissues?

Answer 25

Connective Tissue

(if you were unsure, go back and review the different sub-categories/types of tissues)

Question 26

What type of cartilage is found in the external flap of the outer ear, epiglottis, and the nose?

Answer 26

elastic cartilage

Question 27

What type of cartilage is found in the meniscus in the knees and intervertebral discs?

Answer 27

fibrous cartilage

Question 28

What type of cartilage is found at connections between the ribs and sternum, at the end of long bones in most joint cavities (aka articular cartilage), and the nose?

Answer 28

Hyaline Cartilage