Rat Lab Flashcards
What do rats lack for teeth?
canines
What do rats lack in digestive system?
Gall Bladder
What shape is a rat uterus compared to a human uterus?
Rat = Y (has two horns)
Human = Pear
What are the long hairs on the rats face for?
Called Vibrissae
Tactile organs which allow the rat to navigate confined spaces in darkness
How many visceral cavities are there and what are they?
Two Pleural Cavities (lungs)
Peritoneal (liver spleen,…)
Pericardial (heart)
How many regional cavities are there and what are they?
Abdominal
Thoracic
What does APFVO stand for in regards to the walls of organs?
Abdominal
Parietal Layer
Serous Fluid
Visceral Layer
Organ
What is the Serous Membrane?
Made up of mesothelial cells
Secretes serous fluid
What lines the wall of the Intestine?
Thin membrane called Peritoneum which sourrounds periotoneal cavity
What are the three tubular portions of the gut?
Oesophagus
Small Intestine
Large Intestine
What are the two sacs of the gut?
Stomach
Caecum
Does the oesophagus lie ventral or dorsal to the trachea?
Dorsal
What is the Posterior part of the stomach for?
Digestion
(opaque)
What is the Anterior part of the stomach for?
Storage
(transparent)
What is the Pyloric Sphincter?
Collar of smooth muscle which controls the flow of stomach contents into the duodenum (first section of SI)
What are the 3 sections of the Small Intestine in order?
Duodenum
Jejunum
Ileum
Mesentery Tissue
Double Visceral layer of Peritonium
Is the Spleen part of digestive or lymphatic system?
Lymphatic
What does the Spleen do?
It controls the level of blood cells. The spleen controls the level of white blood cells, red blood cells and platelets
What are the the 4 sections of the Small Intestine in order?
Caecum
Colon
Rectum
Anus
What is the purpose of the Caecum?
House bacteria that act on the gut contents
Breaks down Cellulose
What is the main function of the colon?
Faecal Matter
Dehydration + reabsorbs water
What is the Anus?
A Sphincter under Inner Involuntary and Outer Voluntary control
What does retroperitoneal mean?
Behind the Peritoneum
(to do with kidney)
