Lungs, Pleuras, thoracic vessels

Question 1

right lung

Answer 1

3 lobes-> caudal, middle, cranial
also has accessory lobe
10th intercostal space to 6-7th intercostal space

Question 2

cardiac notch

Answer 2

at 3rd, 4th, 5th intercostal space
space where heart touch
if want to get straight to heart, go here

Question 3

costodiaphragmatic recess

Answer 3

pleural cavity space with no lungs

Question 4

hilus

Answer 4

groove, cleft or space in organ where blood vessels, lymphatics, nerves and other ducts enter or exit through it
only area not covered by pleaura

Question 5

left lungs

Answer 5

2 lobes-> cranial and caudal lobes
cranial lobe passes the first rib
10th intercostal space to 6 intercostal space

Question 6

trachea

Answer 6

dorsal to heart
made up of c-shaped hyaline cartilage
cervical and thoracic region

Question 7

c-shaped cartilage

Answer 7

open on dorsal side and sealed by tracheal smooth muscle
annular ligament between each cartilage

Question 8

carina

Answer 8

ridge of the last tracheal cartilage
orient airflow to the bronchi

Question 9

secondary bronchi

Answer 9

2 on left side, 4 on right side

Question 10

pulmonary lig

Answer 10

connect lungs to mediastinum
stabilize caudal lung lob

Question 11

esophagus dog

Answer 11

tunica muscularis in esophagus composed entirely of skeletal muscle

Question 12

esophagus cat

Answer 12

transition from skeletal to smooth muscle as esophagus courses caudally from pharynx to cardia of stomach
smooth muscle is predominant type found in caudal 1/3

Question 13

esophagus portions

Answer 13

cervical, thoracic and abdominal

Question 14

aortic arch

Answer 14

2 branches: brachiocephalic trunk and left subclavian a

Question 15

descending aorta

Answer 15

bronchoesophageal a and dorsal intercostal a
longest portion of aorta

Question 16

ascending aorta

Answer 16

very short
gives rise to right and left coronary aa which supply oxygen rich blood to heart

Question 17

brachiocephalic trunk

Answer 17

ventral and larger
gives rise to left common carotid, right common carotid, and right subclavian aa

Question 18

vertebral a

Answer 18

go through transverse foramen
start with C6
supply vertebrae and muscles spinal cord and brain

Question 19

costocervical trunk

Answer 19

supply at least first 3 intercostal arteries and neck

Question 20

superficial cervical a

Answer 20

supply muscles in neck

Question 21

axillary a

Answer 21

cranial to first rib

Question 22

internal thoracic a

Answer 22

floor of thorax
supply ventral intercostal space

Question 23

anastomosis

Answer 23

when 2 organs (like vessels) joint together

Question 24

bronchoesphageal a

Answer 24

supply bronchial tree and esophagus

Question 25

dorsal intercostal aa

Answer 25

1-3 arise from costocervical trunk
4-13 arise directly from aorta
course caudal to rib

Question 26

ventral intercostal aa

Answer 26

arise from internal thoarcic a
course cranial and caudal to rib

Question 27

azygos v

Answer 27

only on right side
collects blood from dorsal intercostal v
drains into caudal vena cava/ right atrium

Question 28

dorsal intercostal v

Answer 28

drain into azygous v

Question 29

ventral intercostal vv

Answer 29

drain into internal thoracic v

Question 30

thoracic duct

Answer 30

carries lymph from cisterna chyli to venous system and drains into cranial vena cava or left brachiocephalic v
runs with aorta and azygos v

Question 31

mediastinum

Answer 31

median partition in the thorax
space between right and left pleural space
bound by connective tissue and pleura
three regions-> cranial, middle, caudal

Question 32

plica vena cava

Answer 32

thin loose fold a pleura that surrounds caudal vena cava and right phrenic n
middle lobe of right lung sits in space formed by plica vena cava and mediastinum