Circulatory System Flashcards Preview

Biology 101 > Circulatory System > Flashcards

Flashcards in Circulatory System Deck (65)
Loading flashcards...
1

blood vessels

transports blood from the heart to the body cells and back again

2

arteries

vessels that carry blood away from the heart

3

arterioles

arteries that divide into smaller arteries

4

capillaries

smallest of blood vessels; connect arterioles outflow to venous return
considered the functional units of the cardiovascular system
have very thin walls which allow oxygen nutrients and waste to be exchanged between the blood and body tissue

5

aorta

largest artery of the body
supplies all parts of the body with oxygenated blood and has four principle divisions

6

ascending aorta

emerges from the left ventricle posterior to the pulmonary trunk
contains the aortic valve
arches to form the aortic arch
gives off two coronary artery branches that supply the myocardium

7

aortic arch

the most superior portion of the aorta
the ascending aorta turns left for,ing an arch descends and e ds at the level of the interverebral disc between the fourth and fifth thorasic vertebrae

8

descending aorta

continues the aortic arch
it extends from the arch into the abdomen where it bifurcates into the common iliac arteries

9

thoracic aorta

section of arch between the arch of the aorta and the diaphram

10

coronary arteries

the first and only branch from the ascending portion of the aorta
provide blood to the myocardium of the heart

11

brachiocephalic artery

the first vessel off the aortic arch
bifurcates intomthe right common carotid and right subclavian arteries

12

right common carotid artery

supplies blood to the right side of the face and head

13

right subclavian artery

supplies blood to the right upper extremity as well as throughout the right side of the thoracic region

14

left common carotid artery

supplies blood to the left side of the face and head

15

internal caortid artery

supply blood to portions of the brain

16

external carotid arteries

supply blood to the face, scalp, and neck

17

left and right subclavian artery

supples blood the left upper extremity as well as throughout the left side of the thoracic region

18

axially arteries

continuation of the subclavian arteries; beginning at the lateral border of the first rib and continuing until armpit region where they become brachial arteries

19

brachial arteries

continuations of the axially arteries along each humerus. they bifurcate into smaller arteries in the hands. common site for measuring blood pressure.

20

radial and ulnar arteries

bifurcate into smaller arteries in the hand. common site for radial pulse

21

vertebral arteries

branch from subclavian arteries. travel superiorly through the forearm magnum where they anastamos to for basilar artery

22

basilar artery

anastamos with two internal carotid arteries to form the circle of willis

23

circle of willis

serves as the major blood supplier to the brain

24

common iliac arteries

provide blood to the pelvic region external genitals and lower extremities
formed when the abdominal aorta bifurcates just superior to the pelvic brim

25

popliteal arteries

direct contiunation the femoral arerties as they pass throught the popliteal regions

26

anterior and posterior tibial arteries

travel the entire length of the leg until they terminate in the feet where smaller branches supply the feet with blood

27

peroneal arteries

travel down the lateral, posterior portion of the leg until they reach the feet where they terminate

28

heart

pumping mechanism located in the mediastunum

29

mediastinum

mass of tissues and organs that serparate the lungs
contains the heart, large vessels, trachea, esphagus, and thymus glands

30

base

wide posterior surface of the heart formed by the atria