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A&P 2 Lab pgs12-14
cat circulation 1
49
Anatomy
Undergraduate 1
02/03/2013

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Cards

Term
thymus gland
Definition
glandular mass found just cranial to the heart; especially prominent in young cats, but not very apparent in old ones
Term
pericardium
Definition
a membranous sac which surrounds the heart
Term
parietal pericardium
Definition
portion of the pericardium forming the outer wall of the pericardial cavity
Term
visceral pericardium
Definition
portion of the pericardium adhering to the heart wall
Term
pericardial cavity
Definition
portion of the coelom housing the heart; between the parietal and visceral pericardium
Term
heart
Definition
large organ occupying the pericardial cavity and having four major chambers in the adult
Term
right ventricle
Definition
thick-walled chamber which pumps oxygen-poor blood to the lungs in the adult
Term
left ventricle
Definition
thickest-walled chamber which pumps oxygen-rich blood to all the parts of the body except the lungs
Term
apex
Definition
caudal end of the heart; directed toward the left
Term
right atrium
Definition
thin-walled chamber which receives oxygen-poor blood from all parts of the body; found just cranial to the right atrium
Term
right auricle
Definition
obvious ear-like portion of the right atrium
Term
left atrium
Definition
thin-walled chamber which receives oxygen-rich blood from the lungs; found just cranial to the left ventricle
Term
left auricle
Definition
ear-like flap of the left atrium
Term
coronary sulcus
Definition
depression separating the right atrium from the right ventricle
Term
pulmonary trunk
Definition
large, ventrally located arterial vessel which leaves the cranial end of the right ventricle and carries oxygen poor blood to the lungs
Term
aorta
Definition
very large arterial vessel which carries oxygen-rich blood from the left ventricle; curves to the left and passes along the vertebral column to the pelvis
Term
ascending aorta
Definition
straight part of the aorta emerging from the left ventricle
Term
aortic arch
Definition
curved portion of the aorta seen continuing from the ascending aorta
Term
descending aorta
Definition
portion of aorta continuing from the aortic arch in a caudal direction to the level of the pelvis
Term
thoracic aorta
Definition
portion of the descending aorta in the chest area
Term
abdominal aorta
Definition
portion of the aorta in the abdominal area
Term
coronary arteries
Definition
two small vessels which leave the base of the ascending aorta and pass to the heart musculature
Term
coronary veins
Definition
seen on the surface of the heart wall parallel to the branches of the coronary arteries
Term
postcava (inferior vena cava)
Definition
one of the large veins entering the right atrium; drains the lower regions of the body
Term
precava (superior vena cava)
Definition
one of the large veins entering the right atrium; drains the head, neck, and forelegs
Term
coronary sinus
Definition
collection point for the coronary veins; empties into the right atrium almost in common with the postcava
Term
pulmonary veins
Definition
short veins which carry oxygen-rich blood from the lungs to the left atrium
Term
internal mammary vein
Definition
mid-ventral branch from the precava which bifurcates distally and drains the thoracic wall as well as the cranial portion of the ventral abdominal wall
Term
innominate veins
Definition
two short branches of the precava, each of which has several smaller branches
Term
subclavian vein
Definition
drains blood from the foreleg into the innominate vein
Term
axillary vein
Definition
continuation ofsubclavian vein located in the armpit
Term
brachial vein
Definition
continuation of subclavian vein located in the foreleg
Term
external jugular vein
Definition
seen superficially alongside neck; helps drain blood from the head to the innominate; transverse vein connects the two veins
Term
internal jugular vein
Definition
small vein parallel to the cranial portion of the windpipe which drains blood from the skull to the innominate
Term
transverse scapular vein
Definition
helps drain the shoulder; empties into the external jugular vein
Term
vertebral vein
Definition
usually enters the innominate vein; drains the cranial cavity; passes down through the transverse foramina of cervical vertebrae
Term
azygos vein
Definition
unpaired vessel which enters the dorsal part of the precava near its connection with the right atrium; helps drain the thoracic wall
Term
intercostal veins
Definition
drain blood from intercostal areas into the azygos vein
Term
highest intercostal vein
Definition
most cranial intercostal vein
Term
intercostal arteries
Definition
vessels originating from the thoracic aorta which supply blood to the intercostal areas; can be seen adjacent to the intercostal veins
Term
innominate artery
Definition
one of the large vessels arising from the front of the aortic arch
Term
left subclavian artery
Definition
other large vessel arising from the front of the aortic arch
Term
axillary artery
Definition
continuation of left subclavian artery in the armpit
Term
brachial artery
Definition
continuation of left subclavian artery in the foreleg
Term
right subclavian artery
Definition
most lateral of three branches of the innominate artery; its main trunk supplies oxygen-rich blood to the right foreleg; divisions are the same as the left subclavian artery
Term
internal mammary arteries
Definition
arise from the ventral surfaces of the subclavians and run to the chest wall on either side of the sternum
Term
cranial epigastric arteries
Definition
continuation of the internal mammary arteries after they have passed into the ventral abdominal wall
Term
vertebral artery
Definition
arises from the dorsal surface of the subclavian; follows the vertebral vein through the transverse foramina of the cervial vertebrae into the cranial cavity
Term
common carotid arteries
Definition
the remaining two branches of the innominate artery which are seen on either side of the windpipe; carry oxygen-rich blood to the head
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