Quiz 12 - Vessels (Arteries) Flashcards Preview

Anatomy > Quiz 12 - Vessels (Arteries) > Flashcards

Flashcards in Quiz 12 - Vessels (Arteries) Deck (26):
1

layers of the blood vessels

superficial to deep:
- tunica externa
- tunica media
- tunica intima

2

tunica externa

connective or fibrous tissue (mostly collagen)

3

tunica media

smooth muscle: vasoconstrict/vasodilate in response to autonomic nervous system or local stimuli
elastin: allows for resilience (expand and recoil)

4

tunica intima

endothelium: single layer of endothelial cells lining the inner wall of ALL vessels (continuous from endocardium in heart)

5

types of blood vessels

arteries, capillaries, veins

6

types of arteries

large (elastic) arteries
small (muscular) arteries
arterioles

7

large arteries

largest diameter (up to 25mm)
thickest walls ~2mm
contains the most elastin
conduct blood AWAY from heart
tolerate pressure changes

8

small arteries

small diameter ~5mm
thinner walls ~1mm
contain the most smooth muscle and less elastic tissue
contract/relax to control blood flow to each organ

9

arterioles

smallest diameter ~0.03mm
thinnest walls ~5um
mostly smooth muscle
contract/relax to control blood flow to capillaries

10

general patterns

right and left sides are usually identical
single vessel changes names as it crosses specific anatomical boundaries

11

aortic arch

3 branches: supply blood to head, neck, shoulders, and upper neck
- brachiocephalic trunk
- lt common carotid
- lt subclavian

12

brachiocephalic trunk

splits into...
rt common carotid --> internal and external carotid
rt subclavian

13

arteries of the brain

internal carotid
vertebral
basilic
circle of willis

14

internal carotid

stern from common carotid at larynx

15

vertebral

stem from subclavian
- ascends through transverse foramina of cervical vertebrae
- enters cranium at foramen magnum

16

basilic

formed from 2 vertebral arteries

17

circle of willis

'ring' formed by internal carotid and basilar artery around pituitary gland

18

upper extremity arteries

axillary - shoulder
brachial - upper arm and elbow
radial and ulnar - lower arm

19

thoracic cavity arteries

descending aorta - continuous with aortic arch
thoracic aorta - superior to diaphragm

20

arteries of thoracic aorta

pericardial - pericardium
bronchial - lungs
esophageal - esophagus
mediastinal - mediastinum
intercostals - thoracic cavity walls
superior phrenic - superior diaphragm

21

unpaired abdominal cavity arteries

celiac trunk
superior mesenteric
inferior mesenteric

22

arteries of celiac trunk

left gastric - stomach, esophagus
common hepatic - liver, duodenum, pancreas
splenic - spleen, pancreas

23

superior mesenteric

small intestine and proximal colon

24

inferior mesenteric

distal colon and rectum

25

paired abdominal cavity arteries

inferior phrenic - inferior diaphragm
suprarenal - adrenal gland
renal - kidneys
gonadal - gonads
lumbar - vertebrae, spinal cord and abdominal wall

26

lower extremity arteries

common iliac - pelvic organs (bladder)
external iliac - hip
femoral - thigh (upper leg)
popliteal - knee
anterior tibial - anterior lower leg
posterior tibial - posterior lower leg (calf)
fibular