Midterm 2 Test Review (20, 17, 23) Flashcards
Where do the L & R common carotid arteries emerge from?
Aortic arch
Where do the L & R common carotid arteries branch into?
The external & internal carotid arteries
What do the external carotid arteries supply?
The external skull region
What do the internal carotid arteries supply?
The brain & orbits (eyes)
What are the 4 main arteries (L&R) of the head & neck?
- where do the 3 branch off of?
- Common Carotid Arteries (L&R)
- Vertebral Arteries (L&R)
- Thyrocervicle Trunk (L&R)
- Costocervicle Trunk (L&R)
—> the last 3 branch off the subclavian arteries
Where are the vertebral arteries located?
Where are the thyrocervicle trunks located?
Where are the costocervicle trunks located?
In the brain
In the thyroid gland
In deep neck of intercostal muscles
What are the 3 primary veins that drain the head & neck?
- Vertebral veins (L&R)
- External Jugular veins (L&R)
- Internal Jugular veins (L&R)
What do the vertebral veins empty into?
What do the external jugular veins drain into?
What do the internal jugular veins merge with & drain into?
1) subclavian vein
2) subclavian vein
3) merges with brachiocephalic to form subclavian
What are the 6 main arteries of the abdominal & thoracic wall?
1) internal thoracic artery (L&R)
2) inferior epigastric artery
3) lumbar arteries (5 pairs)
4) supreme intercostal artery
5) posterior intercostal arteries (3-11)
6) median sacral artery
Where does the internal thoracic artery emerge from & branch into?
- emerges from subclavian artery
- branches into…
1) 6 anterior anterior intercostal arteries (R&L)
2) 1 musculophrenic artery (R&L)
3) superior epigastric (R&L)
Where does the inferior epigastric artery emerge from & what does it supply?
- emerges from external iliac artery
- supplies inferior abdominal wall
Where do the lumbar arteries branch off of?
Branches from descending abdominal aorta
Where does the supreme intercostal artery branch into?
Branches into posterior intercostal arteries
Where do the posterior intercostal arteries branch off of?
Branches from descending thoracic aorta
Where does the median sacral artery emerge from?
Emerges at bifurcation of descending aorta
Where does the internal thoracic vein receive its blood from?
Receives blood from…
- anterior intercostal veins
- musculophrenic vein
- superior epigastric veins
Where does the inferior epigastric vein drain its blood into?
External iliac vein
Where does the supreme intercostal vein receive its blood from?
1st, 2nd, & 3rd posterior intercostal veins
Where does the right azygos vein receive blood from?
Right lumbar & right posterior intercostal veins
What is the endocrine system?
System of ductless glands that make & secrete hormones
What are hormones?
Chemicals released in blood & transported throughout the body
What are target cells?
Specific/specialized receptors that bind & respond to a specific hormone
What are the 2 control systems of the body?
- how are they similar?
Endocrine System & nervous system
- both have Ligands
What are ligands?
Chemical messengers that bind to receptors of specific target cells
What are the 2 types of ligands in the body and what are they?
1) nervous ligands - neurotransmitters
2) endocrine ligands - hormones
What are the 4 main roles of the endocrine system?
1 - transmits hormones through blood
2 - targets cells in body with correct receptors
3 - longer reaction times (hours)
4 - longer-lasting effects (days & weeks)
4 general functions of endocrine system:
1 - maintain homeostasis in blood (regulates concentration & volume)
2 - controls reproductive activities
3 - growth, development, & metabolism
4 - controls digestive processes
What are the 3 major endocrine glands?
1 - endocrine glands
2 - endocrine organs
3 - organs with endocrine cells
What is the endocrine glands role?
Contain epithelial tissue that makes & releases hormones
What is the role of the endocrine organs?
They’re glands solely with endocrine function
What are organs with endocrine cells?
Organs that have some other primary function but contains clusters of endocrine cells
What are hormonal reflexes?
The release of hormones that occurs as a reflex to stimuli
What are the 3 stimuli that cause hormonal reflexes?
1 - hormonal stimulation
2 - humoral stimulation
3 - nervous stimulation
What is hormonal stimulation of the endocrine system?
The release of one hormone that activates the release of another hormone from another endocrine gland