lab practical #3

Question 1

diaphragm action

Answer 1

primary muscle of respiration - expands thoracic cavity

Question 2

diaphragm nerve innervation

Answer 2

phrenic nerve

Question 3

rectus abdominis action

Answer 3

flexes trunk - compresses abdominal viscera

Question 4

rectus abdominis attachment

Answer 4

pubic symphysis / pubic crest & xiphoid process & 5-7th costal cartilages

Question 5

rectus abdominis nerve innervation

Answer 5

thoraco-abdominal and subcostal nerves (T7-T12)

Question 6

transversus abdominis nerve innervation

Answer 6

thoraco-abdominal nerves, subcostal nerve and 1st lumbar nerve

Question 7

external oblique action

Answer 7

flexes and rotates trunk [compress & support abdominal viscera]

Question 8

external oblique nerve innervation

Answer 8

thoraco-abdominal and subcostal nerves (T7-T12)

Question 9

external oblique attachment

Answer 9

external surfaces of ribs 5-12 and linea alba, pubic tubercle and anterior part of iliac crest

Question 10

internal oblique attachment

Answer 10

thoracolumbar fascia, anterior part of iliac crest and inferior borders of ribs 10-12, linea alba and pubis

Question 11

internal oblique nerve innervation

Answer 11

thoraco-abdominal nerves, subcostal nerve and 1st lumbar nerve

Question 12

internal oblique action

Answer 12

flex & rotate trunk [compress and support abdominal viscera]

Question 13

liver

Answer 13

• right vs left lobe

- falciform ligament

Question 14

lungs nerve innervation

Answer 14

pulmonary plexus [sympathetic, parasympathetic, visceral afferent fibers]

Question 15

lungs blood supply

Answer 15

bronchial artery

Question 16

right vs left lungs - lobes/fissures

Answer 16

• r = 3 lobes with horizontal (top) and oblique (bottom) fissures
• l - 2 lobes with oblique fissure

Question 17

lungs primary bronchi

Answer 17

hard part on inside

Question 18

aortic arch

Answer 18

• brachiocephalic artery –> right common carotid artery & right subclavian artery
• left common carotid artery
• left subclavian artery

Question 19

AV valves

Answer 19

• tricuspid

- mitral (bicuspid)

Question 20

the four chambers of heart

Answer 20

• right and left atria

- right and left ventricles

Question 21

chordae tendinae

Answer 21

valves

Question 22

papillary muscles

Answer 22

thicc boys

Question 23

trabeculae carnae

Answer 23

spider webs

Question 24

small intestine

Answer 24

• duodenum & jejunum

- ileum

Question 25

large intestine

Answer 25

• appendix
• cecum
• ascending colon
• transverse colon
• descending colon
• sigmoid colon

Question 26

uterus

Answer 26

• fallopian/uterine tubes
• fimbrae
• ovaries - ovarian artery

Question 27

penis blood supply

Answer 27

internal pudendal artery

Question 28

penis two at top

Answer 28

corpora cavernosa

Question 29

penis one at bottom with urethra running thru it

Answer 29

corpus spongiosum

Question 30

spermatic cord contents

Answer 30

• vas/ductus deferens
• cremasteric artery
• testicular artery
• artery of ductus deferens
• genital branch of gentiofemoral nerve
• lymphatic vessels
• pampiniform plexus of veins

Question 31

testes

Answer 31

• seminiferous tubules = sperm made

- epididymis = sperm stored and matured

Question 32

pectoralis major nerve innervation

Answer 32

medial and lateral pectoral nerve

Question 33

greater omentum attachment

Answer 33

greater curvature of stomach and hangs over anterior abdominal cavity