organisation of cells into tissues and organs

Question 1

salivary glands

Answer 1

3 major glands: parotid, submandibular and sublingual glands

contain striated ducts

Question 2

parotid gland

Answer 2

contains serous secreting cells

stained light pink

Question 3

submandibular gland

Answer 3

serous secreting cells and mucous secreting cells

serous cells stain purple/blue and mucous cells stain magenta

Question 4

sublingual gland

Answer 4

serous secreting cells and mucous secreting cells

Question 5

striated ducts

Answer 5

modify saliva that passes through themby pumping salt out of the fluid so our saliva is hypotonic to blood

Question 6

digestive tract

Answer 6

composed of 4 main layers

1. mucosa
2. submucosa
3. muscularis externa
4. serosa/adventitia

Question 7

mucosa

Answer 7

3 parts
epithelium: sits on a basal lamina
lamina propria: loose connective tissue
muscularis mucosae: thin layer of smooth muscle

Question 8

submucosa

Answer 8

loose connective tissue

Question 9

muscularis externa

Answer 9

2 thick layers of smooth muscle, an inner circular layer and an outer longitudinal layer

Question 10

serosa/adventitia

Answer 10

outer layer of connective tissue that either suspends the digestive tract or attaches to other organs

Question 11

variations in mucosa

Answer 11

4 types

1. protective
2. secretory
3. absorptive
4. protective and absorptive

Question 12

protective

Answer 12

non keratinized stratified squamous epithelium. oral cavity, pharynx, oesophagus, anal canal

Question 13

secretory

Answer 13

simple columnar epithelial with extensive tubular glands. stomach

Question 14

absorptive

Answer 14

simple columnar epithelium with villi and tubular glands. small intestine

Question 15

protective and absoptive

Answer 15

simple columnar epithelium with tubular glands. large intestine

Question 16

nervous tissue

Answer 16

the digestive tract has its own nervous system called the enteric nervous system.
most of the neurons live in groups called ganglia between the 2 muscle layers that make up the muscularis external