Pool Questions 1 (Tissues) Flashcards Preview

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Flashcards in Pool Questions 1 (Tissues) Deck (21)
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1
Q

What are the four types of tissues within the body?

A
  1. Epithelial
  2. Connective
  3. Muscle
  4. Nervous
2
Q

T/F Blood and bones are connective tissues

A

True

3
Q

T/F Epithelial tissue is the most vascularized tissue within the body

A

False- it is avascular

4
Q

What tissues are excitable?

A

Muscle and Nervous

5
Q

By what mechanisms can muscle and nervous tissue be stimulated?

A

Depolarization down axons via movement of ions. “Electrochemical stimulation”

6
Q

When examining tissues, which is the most, organized visually?

A

Muscle because it is striated

7
Q

If a bone has been placed in an acid, such as vinegar, what will happen to the bone?

A

The vinegar (or any acid) dissolves the calcium in the bone, which is what makes it hard (and is the inorganic substance in the bone. This leaves only soft bone tissue (the organic substance) so the bone can now bend and twist.

8
Q

What is one function of epithelial tissue?

A

Protection, secretions, absorption, filtration, excretion, sensory reception, forms boundaries between different environments

9
Q

List the different types of connective tissue.

A
  1. loose connective tissue (adipose/fat, areolar, reticular)
  2. bones
  3. blood
  4. dense connective tissue
    • dense regular (ligaments, tendons)
    • dense irregular (fibrous capsules of organs and joints, dermis of skin, submucosa of digestive tract)
    • elastic (walls of large arteries - aorta, walls of bronchial tubes)
  5. cartilage
    • hyaline (embryonic skeleton, ends of long bones, costal cartilage of the ribs, cartilage of nose, trachea, and larynx)
    • elastic (external ear, epiglottis)
    • fibrocartilage (intervertebral discs, pubic symphysis, discs of knee joints - meniscus)
10
Q

T/F. Blood is an example of epithelial tissue.

A

False- it is an example of connective tissue

11
Q

What makes epithelial tissue unique from the other tissues? (5)

A
  1. It’s avascular but innervated
  2. has ability to regenerate
  3. polarity
  4. specialized contacts
  5. supported by connective tissue
12
Q

T/F. All fibers of connective tissue differ by their extracellular environment.

A

True- all connective tissues are different based on their environment of the extracellular matrix. Ex: Ligaments vs. Adipose tissue

13
Q

What is the name of the tissue that covers the outside of the body?

A

Epithelial

14
Q

Is the lining of your stomach considered the outside of your body? Explain.

A

Yes. Tissue has a polarity, one surface is exposed to the surface or cavity, while another surface is attached to the basal surface.

15
Q

What does depolarization of a nerve cause? Of a muscle fiber

A

Action potential, which in turn depolarizes the nerve or muscle cells proceeding it.

16
Q

Why does epithelial tissue need to be in close proximity to another type of tissue that has a blood supply?

A

Because it is avascular but needs to get the nutrients from that blood supply to survive…it’s innervated

17
Q

What is the most efficient way our body stores energy?

A

Fat

18
Q

How much more energy does fat have per unit gram than carbohydrates?

A

2.25 times more energy in fat than carbohydrates

o Fat has 9 kals/g, Carbs have 4 kals/g

19
Q

What is the function of hydroxyapatite?

A

which allows it to resist coinorganic–makes hardness in bone mpression

20
Q

What determines the type of connective tissue a tissue is?

A

characteristics of the cells and the compositions and arrangement of extracellular matrix elements ← (shape/cell arrangement)

21
Q

Does the outermost layer of epithelium regenerate?

A

does not regenerate–regeneration happens at the basal surface, and moves outward, until it is sloughed off.