Body cavities, circulatory and lymphatic system Flashcards
what is in the thoracic cavity?
- vagus nerve
- aorta
- vena cava
- thymus
- bronchii
- thoracic duct
- lungs
- heart
- distal trachea
- oesophagus
what is in the abdominal cavity?
- stomach
- liver
- spleen
- gall bladder
- pancreas
- small intestine
- caecum
- large intestine
- colon
- rectum
- bladder
- ureters
- urethra
- kidneys
- uterus
- ovaries
what is the lining of the walls of a cavity called?
parietal
what is the lining of the organs of any cavity called?
visceral
what is the walls of the thoracic cavity called?
pleura
what is the walls of the abdominal cavity called?
peritoneum
what is the mediastinum?
the area that separates the left and right lung
what does the mediastinum contain?
- heart
- trachea
- oesophagus
- lymph nodes
- thymus
what is the aortic hiatus?
hole for the aorta
what is the oesophageal hiatus?
hole for oesophagus
what is the caval foramen?
hole for the vena cava
what is the heart?
- four chambered, biological pump
- myogenic (made of muscle)
what is the pericardium sac of the heart made up of?
- 3 layers
- fibrous (outer membrane for protection)
- serous ( inner layer for lubrication)
- visceral serous (covers heart)
what makes up the heart mass?
myocardium
what is the inner heart lining called and what type of tissue is it?
endocardium - simple squamous epithelium
what are the four chambers of the heart?
- right ventricle
- right atrium
- left ventricle
- left atrium
where does the heart sit in dogs and cats?
dogs - 3rd and 6th intercostal space
cats - 3rd and 5th intercostal space
what is the journey of blood through the heart?
- superior and inferior vena cava (DEOXYGENATED BLOOD) - right atrium - right ventricle - pulmonary - the lungs - gaseous exchange - OXYGENATED BLOOD - pulmonary vein - left atrium - left ventricle - aorta - rest of the body