Cavities Of The Body Flashcards
What are the functions of the cavity
1 Protection to allow movement
2 compartmentalization To limit spread of diseases
Overview of cavities. What are are do we base the info of off
There are five cavities with in the body
Based on
1location
2
3
4
Classify the cavity based on location
1Dorsal cavity
2 the ventral cavity
The dorsal cavity constituents
It constitutes the cranial cavity and the vertebral canal
These two parts are connected through the foramen magnum
Classifications of the skull
Cranium and mandible
What are bones does the cranium cavity consists of
Ethimoid bone(1)
Sphenoid bone(1)
Frontal bone(1 )
Parietal bone (2)
Temporal bone (2)
Occipital bones (1)
Describe the calvaria
Can also be understood as a skull cap
Consists of
- frontal bone
-parietal bone
-occipital bone
Base of the skull in terms of the three fosse
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fosaa
Explain the cranial cavity
Borders of the vertebral canal
Anyerior
Post
And lateral
Lateral borders
Contains the
Pedicles
Trnasverse process
Posterior borders
Contains
Lamina
Spinus process
Explain the epidural space in relation of
The spinal cord- pia mater- arachnoid matter- dura matte( more close the vertebral body)- between there is the epidural space( has the epidural fat) - all this enclosed i the vertebral canal
Caudal equina and the difference between spinal cord and spinal nerves was
After the spinal cord ends around L1 or L2
Spinal cord is a tube where nerves branchout from. It is part of the CNS
The caudal equina are spinal nerves and spinal rootlets. Part if the peripheral nervous system
The continous process of the dura, arachnoid and pia matter
The dura and arachnoid matter will follow the cauda equina into the sacrum
While the pia matter will go down to the coccyx as the filum terminale( an extension of the pia matter) acting as an anchor to the spinal cord
The ventral cavity constituents
It consists of the
thoracic cavity
& abdominal cavity
The thoracic cavity includes the plueral cavity, superior and mediasttinum cavity
Abdominal cavity and pelvic cavity
Thoracic cavity is made
The veryebral body
The rib cages and sternum and costal cartilages
What are the Borders of the thoracic cavity
Superior
Comprised of the vertebral body,first rib and manubrium of sternum
Lateral
Posterior
Respiratory diaphragm
Posterior anterior laterally
The vertebral bodies
Ribs
Intercostal muscles
Sternum…. Make a bird cage type thing
Location of the pleural cavity
From outside
Parietal pleura- space( pleural cavity has fluid - viseral pelura
Functions of the pleural cavity
1 lubrication
2 prevent the lung from collapsing
How is does the pleural cavity keep the lung from collapsing
Intrapleural pressure is less than intrapulmonary pressure
Pericardial cavity
And it’s function
It is a fluid located between the parietal pericardium and the visceral pericardium(epicardium)
These two pericardium are found with in the serous membrane
The two membranes of the heart
1 serous membrane
2 fibrous membrane
What are the functions of these two membranes
The serous memebrane is used to
The fibrous membrane
Border of superior mediastinum
Superiorly
Laterally
Parietal pleura
Anteriorly
Manubrium
Posteriorly
vertebral bodies
Inferiorly
Is the imaginary line drawn at T4
Contents of superior mediastinum cavity
Contents:
• Oesophagus
• Trachea
• Arch of the aorta
Brachiocephalic veins
• Arch of the azygos vein
• Phrenic nerve
• Vagus nerve
• Thymus
Abdominal cavity
The superior
Is the diagram
The anterior- lateral
Is the soft tissues and muscles of the abdominal wall
Posterior
Is the verteral bodies and mucles
Inferiorly
Plevic inlet
… false pelvis
Contents of abdominal cavity
Large interstine, kindney, liver
can also see the pancreas, mesentery of the small intestine
Borders of the Pelvic cavity
Superiorly
Pelvic inlet
Laterally
Anteriorly
Inferiorly
List out the contents Female pelvis
Male pelvis
Clinical notes- pericarditis
