anatomy quiz 3

Question 1

thorax two openings

Answer 1

-superior thoracic aperture
-inferior thoracic aperture

Question 2

posterior

Answer 2

thoracic vertebrae and their intervertbral disks

Question 3

lateral

Answer 3

ribs and thoracic muscles

Question 4

anterior

Answer 4

sternum

Question 5

sternum

Answer 5

-manubrium
-body
-xiphoid process

Question 6

superior thoracic aperture

Answer 6

• ## surrounded in bone by T1 vertebrum, rib 1, and manubrium

Question 7

Inferior thoracic aperture

Answer 7

-surrounded by T12 vertebra, rib 11 and 12, and the cartilage of the 7-10 and the xiphoid process

Question 8

the mediastinum

Answer 8

medial portion that contains viscera and divides left and right pleura

Question 9

parietal pleura

Answer 9

more superficial and associated with the thoracic wall

Question 10

visceral pleura

Answer 10

deeper and surrounding the lung

Question 11

pneumothorax

Answer 11

puncture into this space to allow air in

Question 12

superficial compartment

Answer 12

skin and breast

Question 13

deep compartment

Answer 13

muscles and connective tissue

Question 14

mammary glands

Answer 14

modified sweat glands
Composed of small
secretory lobules that empty
into 15-20 small lactiferous
ducts
-each duct empties into its own opening in the nipple

Question 15

Arterial supply

Answer 15

collects blood through multiple arteries associated with the chest and limbs

Question 16

venous supply

Answer 16

axillary internal thoracic and intercostal Viens

Question 17

innervation

Answer 17

2nd -6th intercostal nerves 4th intercostal innervates nipple

Question 18

lymphatic drainage

Answer 18

mostly through axillary nodes

Question 19

pectoralis major

Answer 19

adduction, medial rotation, and flexion of the humerus

Question 20

subclavius

Answer 20

pulls calicle medially
depressed tip of shoulder

Question 21

pectoralis minor

Answer 21

depressed tip of shoulder
protracts scapula

Question 22

bones of thorax

Answer 22

superior- head of its own rib
inferior- head of the next ribs
oval or lateral facet for tubercle of own rib

Question 23

important landmarks

Answer 23

jugular notch and xiphoid visible and palpable

Question 24

serratus anterior

Answer 24

on lateral margins

Question 25

exterior intercostal

Answer 25

inspiration

Question 26

interior intercostal

Answer 26

expiration

Question 27

innermost intercostal

Answer 27

synergist to inferior

Question 28

subcostals

Answer 28

in same plane as inner intercostals, can depress ribs

Question 29

transversus toracicus

Answer 29

depress costal cartilages

Question 30

posterior supply

Answer 30

intercostal arteries erupting from the aorta

Question 31

anterior supply

Answer 31

internal thoracic arteries erupt from subclavian arteries, may branch off into anterior intercostal arteries

Question 32

Brachiocephalic

Answer 32

from arms and head

Question 33

Accessory hemiazygous

Answer 33

from ribs, thoracic muscles and spinal cord

Question 34

Hemiazygous

Answer 34

rom lower ribs and thoracic muscles, plus abdomen

Question 35

phrenic nerves

Answer 35

collect axons form C3-C5

Question 36

pericardial branch

Answer 36

innervation from pericardium and mediastinum

Question 37

blood supply to the lungs

Answer 37

-pulmonary arteries carry blood to the lungs -pulmonary veins return it to the left atrium of heart

Question 38

the pericardium

Answer 38

-fibrous- connective tissue, superfical -serous- surrounds the heart, deeper-lubricrates heart

Question 39

contaction

Answer 39

-isovolumic- increased in pressure, but not enough to move blood -systole(ejection)- blood in squeezed out of the chamber

Question 40

relaxtion

Answer 40

-isovolumic- decrease in pressure, but not enough to move blood -diastole(filing)- blood fills a chamber

Question 41

Splanchnic nerves

Answer 41

Branches that innervate several important abdominal ganglia

Question 42

Hemiazygous veins

Answer 42

Collect blood from lower intercostals and bronchial veins

Question 43

Azygous veins

Answer 43

-Collect blood from intercostals  Empty into inferior vena cava

Question 44

late distole

Answer 44

both sets of chambers are relaxed and ventricles fill passively. -Atrial and ventricular state = relaxed -AV valve= open -Semilunar valve= closed

Question 45

artial systole

Answer 45

atrial contraction forces a small amount of additional blood into ventricles. -Atrial state- contracting -ventricular state-relaxed -AV valve--open -semilunar valves- closed

Question 46

Isovolumic ventricular contraction

Answer 46

first phase of ventricular contraction pushes AV valves closed but does not create enough pressure to open semilunar valves Atrial state= relaxed ventricular state= isovolumetric contraction AV valves= closing first heart sound Semilunar valves=close not enough pressure

Question 47

Ventricular systole

Answer 47

as ventricular pressure rises and exceeds pressure in the arteries, the semilunar valves open and blood is ejected. Atrial=relaxed ventricular state=contracting & ejection AV valves= closed semilunar valves= open

Question 48

Isovolumic ventricular relaxation

Answer 48

as ventricles relax, pressure in ventricles falls, blood flows back into cusps of semilunar valves and snaps them closed.