Team Based Learning

Question 1

Function of the jejunum

Answer 1

Absorb digested nutrients

Question 2

Plicae circulares

Answer 2

Folds of the mucosa and submucosa

Question 3

4 layers of the jejunum

Answer 3

Mucosa
Submucosa
Muscularis propria
Serosa

Question 4

3 layers of the mucosa

Answer 4

Epithelium (has enterocytes, goblet cells, Paneth cells, and neuroendocrine cells)
Lamina propria (CT, lymphocytes, capillaries, lymphatic channels)
Muscularis mucosae

Question 5

How many layers of muscle does the muscularis propria have?

Answer 5

2

Question 6

Mesothelium

Answer 6

Simple squamous epithelium that lines the abdominal and thoracic organs
On the outsider of the serosa

Question 7

Skin main functions

Answer 7

Barrier

Regulates body temperature (sweat, controls blood flow to the skin)

Question 8

3 layers of the skin

Answer 8

Epidermis
Dermis
Hypodermis

Question 9

Rete ridges

Answer 9

Protrusions of the epidermis into the dermis

Question 10

Dermal papillae

Answer 10

Protrusions of the dermis into the epidermis

Question 11

Adnexal structures (3)

Answer 11

Hair follicles
Eccrine sweat glands
Apocrine sweat glands
Protrude into the dermis and hypodermis

Question 12

Hair follicles

Answer 12

Have sebaceous glands that secrete sebum

Also have smooth muscle bundles so hair can stand up

Question 13

Eccrine sweat gland

Answer 13

Has secretory coli at its base and a duct that extends onto the surface of the skin

Question 14

Apocrine sweat glands

Answer 14

Connect to a hair follicle

Located in the axillae, anogenital areas, mammary region, eyelid, and external ear canal

Question 15

2 layers of the dermis

Answer 15

Papillary dermis (has dermal papillae, contains thin collagen fibers)
Reticular dermis (contains thick collagen fibers)

Question 16

4 types of tissue

Answer 16

Epithelia
Connective
Muscle
Nervous

Question 17

3 phases of wound healing

Answer 17

Inflammatory
Proliferative
Remodelling

Question 18

Inflammatory phase

Answer 18

Damaged blood vessels cause fibrillary collagen to be exposed
Activates platelets and the coagulation cascade to form a fibrin clot
Serves as a matrix for later migration of macrophages, fibroblasts, and keratinocytes into the wound
Coagulation cascade releases chemokines (attract neutrophils and macrophages)
Neutrophils kill bacteria, macrophages kill, remove debris, and dead neutrophils

Question 19

Proliferative phase

Answer 19

Keratinocytes at the edge of the wound migrate into the wound
Proximal keratinocytes proliferate
Endothelial cells from blood vessels migrate and proliferate (angiogenesis)
Fibroblasts migrate and proliferate (then produce matrix proteins to reconstitute the CT)
Granulation (appearance of proliferation)
Fibroblasts also alter their gene expression in order to become myofibroblasts (capable of contracting) – to close wound

Question 20

Remodelling phase

Answer 20

Matrix proteins continue to be deposited and are also digested
Continues until the matrix resembles pre injury matrix

Question 21

Healing by primary intention

Answer 21

Acute wounds heal faster when you bring the edges together with sutures or steristrips

Question 22

Healing by secondary intention

Answer 22

When the edges are not brought together

Question 23

Purpose of occlusive dressings

Answer 23

Maintain a moist environment

This helps cell migration