Pool Questions 1 (Tissues)

Question 1

What are the four types of tissues within the body?

Answer 1

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

Question 2

T/F Blood and bones are connective tissues

Answer 2

True

Question 3

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

Answer 3

False- it is avascular

Question 4

What tissues are excitable?

Answer 4

Muscle and Nervous

Question 5

By what mechanisms can muscle and nervous tissue be stimulated?

Answer 5

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

Question 6

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

Answer 6

Muscle because it is striated

Question 7

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

Answer 7

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.

Question 8

What is one function of epithelial tissue?

Answer 8

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

Question 9

List the different types of connective tissue.

Answer 9

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)

Question 10

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

Answer 10

False- it is an example of connective tissue

Question 11

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

Answer 11

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

Question 12

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

Answer 12

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

Question 13

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

Answer 13

Epithelial

Question 14

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

Answer 14

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

Question 15

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

Answer 15

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

Question 16

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

Answer 16

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

Question 17

What is the most efficient way our body stores energy?

Answer 17

Fat

Question 18

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

Answer 18

2.25 times more energy in fat than carbohydrates

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

Question 19

What is the function of hydroxyapatite?

Answer 19

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

Question 20

What determines the type of connective tissue a tissue is?

Answer 20

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

Question 21

Does the outermost layer of epithelium regenerate?

Answer 21

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