medsci lab 1

Question 1

difference between human and rat female reproductive organs

Answer 1

Rat is Y shaped with two “arms” or horns in which embryos implant.

Question 2

gall bladder in rats

Answer 2

they have none LOLLLL L + RATIO

Question 3

The structure that forms the physical separation between the abdominal and thoracic cavities

Answer 3

Diaphram it is also not part of the serous membranes

Question 4

The gland that produces both digestive enzymes and hormones

Answer 4

pancreas

Question 4

Organs not part of the digestive system

Answer 4

Heart, Lungs, Spleen, Trachea, Bladder, Kidneys, Reproductive organs and Thymus

Question 5

peritoneum

Answer 5

surrounds the peritoneal cavity and is a very thin membrane bonded to the abdominal wall.

Question 6

mesentery tissue

Answer 6

double layer of peritoneum attaching small intestines ot posterior abdominal wall connected to parietal and visceral peritoneum around small intestines. suspends the intestines and provides support

Question 7

Thoracic cavity

Answer 7

Contains the heart, lungs oesophagus and trachea

Question 8

pericardial cavity

Answer 8

contains the heart

Question 9

pleural cavities

Answer 9

contains the lungs

Question 10

pelvic cavity

Answer 10

urinary bladder, bit of large intestine and internal organs of reproductive system.

Question 11

abdominal cavity

Answer 11

contains stomach, spleen, liver, small intestine and most of large intestine

Question 12

Structures in human not rat

Answer 12

gallbladder, canine, vermiform appendix, sigmoid colon and bulbous ureters

Question 12

Body cavities

Answer 12

Ventral: peritoneal cavity(fillied with serous fluid to reduce friction allowing organs to slide around, contains no organs), pericardial cavity and 2 pleural cavities

Question 13

Organs secreting products into duodenum via common duct

Answer 13

pancreas and liver via bile duct.

Question 14

Functions of rat stomach reigons

Answer 14

Transparent reigon: food storage along with lesseer curvature
Pyloric reigon: opaque for digestion

Question 15

chyme

Answer 15

food that has passed the stomach and small intestine

Question 16

Regions of small intestine in order

Answer 16

stomach -> duodenum -> jejudenum -> ileum and caecum

Question 17

Control of chyme flow

Answer 17

pyloric sphincter: made of smooth muscle and controls chyme flow from the stomach into the duodenum and the flow is involuntary.

Question 18

path of nutrient laden blood leaving small intestine

Answer 18

leaves via veins tributary to hepatic portal vein into the liver

Question 19

Structures under partial volunatry vs involuntary control

Answer 19

Partial: anal sphincter and diaphragm

Question 20

Location + function of epiglottis

Answer 20

Triangular flap at the opening of the trachea (glottis) and prevents food from entering airways by blocking the glottis during swallowing.