The GI tract

Question 1

What are organs grouped into?

Answer 1

alimentary canal and accessory organs

Question 2

Alimentary canal

Answer 2

a tube from lips to anus

Question 3

What are the segments of the canal?

Answer 3

Mouth, Pharynx, Oesophagus, Stomach, Small intestine, large intestine

Question 4

What are the three body cavities?

Answer 4

Thoracic cavity, Abdominal/ Pelvic cavity, and the body wall enclosing the cavities

Question 5

What is the Thoracic cavity lined with?

Answer 5

lined with endothoracic fascia

Question 6

Abdominal and pelvic cavity

Answer 6

lined with transversalis fascia

Question 7

Fascia

Answer 7

A thin layer of connective tissue that surrounds and holds organs

Question 8

What is the body wall composed of?

Answer 8

skin, double layer of fascia, muscles and inner fascia

Question 9

What is the serous membrane?

Answer 9

lines the abdominal cavity, made up of a layer of simple squamous epithelial cells supported by a layer of connective tissue layer that attaches to an underlying structure

Question 10

What are the 3 different types of serous membrane

Answer 10

Parietal serosa, Visceral serosa and Connecting serosa

Question 11

Parietal serosa

Answer 11

lines the wall of the cavity

Question 12

Visceral serosa

Answer 12

lines the organs

Question 13

Connecting serosa

Answer 13

makes serous fluid (peritoneal fluid), functions to stop adhesions among organs

Question 14

Peritoneum

Answer 14

thin serous membrane, it lines the abdominal and pelvic cavities

Question 15

Connecting peritoneum

Answer 15

connects the visceral and parietal peritoneum

Question 16

Parietal and visceral peritoneum

Answer 16

continuous with each other and connecting peritoneum

Question 17

Peritoneal pouches

Answer 17

excavations of peritoneum into the pelvic cavity

Question 18

Peritoneal cavity in males and females

Answer 18

In males it is a completely closed sac, in females it has two small openings (uterine tubes)

Question 19

What are the walls of the peritoneal cavity separated by?

Answer 19

thin films of serous fluid, it is only potential space

Question 20

Mesentery Connecting Peritoneum

Answer 20

between intestinal and the abdominal wall

Question 21

Ligament connecting peritoneum

Answer 21

between visceral and parietal peritoneum

Question 22

Fold connecting peritoneum

Answer 22

between two visceral peritoneum

Question 23

Omentum connecting peritoneum

Answer 23

between the stomach and abdominal organs/ abdominal wall

Question 24

What are the common layers of the alimentary tract?

Answer 24

Tunica mucosa, Tunica submucosa, Tunica muscularis and Tunica serosa

Question 25

Tunica mucosa

Answer 25

next to the lumen and protected by a layer of mucus

Question 26

Tunica submucosa

Answer 26

Dense connective tissue that may have glands, Meissner's plexus

Question 27

Tunica muscularis

Answer 27

Smooth or skeletal muscle, auerbachs plexus

Question 28

Tunica serosa

Answer 28

Loose connective tissue

Question 29

What is the Tunica mucosa split into?

Answer 29

Laminae epithelialis mucosa, Lamina Propria, Lamina muscularis mucosae

Question 30

Laminae epithelialis mucosa

Answer 30

Surface epithelium , rests on a basal membrane

Question 31

Lamina propria

Answer 31

Layer of connective tissue, e.g mucosal glands, blood vessels and lymphoid structures

Question 32

Lamina muscularis mucosae

Answer 32

not always present, thin layers of smooth muscle

Question 33

Tunica adventitia

Answer 33

serosa if organ is surrounded by other tissues

Question 34

Tunica serosa

Answer 34

serosa if organ is suspended in body cavity

Question 35

Mesothelium

Answer 35

what covers simple squamous epithelium in the serosa

Question 36

Tunica muscularis in ruminants and dogs

Answer 36

entirely skeletal

Question 37

Tunica muscularis in Humans and Chicken

Answer 37

entirely smooth muscle

Question 38

Tunica muscularis in Horses and Cats

Answer 38

distal third is smooth, the rest is skeletal

Question 39

What are the 3 parts of the oesophagus?

Answer 39

Cervical thoracic and abdominal

Question 40

what does the oesophagus penetrate through?

Answer 40

penetrates the diaphragm through the oesophageal hiatus