Lecture 9 - Muscles of the Trunk

Question 1

abdominal muscles

Answer 1

• external oblique
• internal oblique
• transversus abdominis
• rectus abdominis

Question 2

intercostal muscles

Answer 2

1) external intercostal
2) internal intercostal

Question 3

three paired muscles in lateral aspect of neck

Answer 3

scalene muscles

Question 4

what are the 3 scalene muscles?

Answer 4

anterior scalene
middle scalene
posterior scalene

Question 5

deep back muscles

Answer 5

• splenius
• erector spinae (its 3 muscles)
• semispinalis
• quadratus lumborum

Question 6

what are the 3 aspects of the erector spinae?

Answer 6

• iliocostalis (lateral)
• longissimus (intermediate)
• spinalis (medial)

Question 7

muscles of pelvic diaphragm

Answer 7

• levator ani
• coccygeus

Question 8

muscles of the urogenital diaphragm

Answer 8

• deep transverse perineal muscle
• external urethral sphincter

Question 9

muscles of superficial perineal space

Answer 9

• ischiocavernosus
• bulbospongiosus
• superficial transverse perineal muscle

Question 10

what does the diaphragm do in terms of its placement?

Answer 10

• forms a complete divide between the thoracic and abdominopelvic cavities
• acts as the floor of the thoracic cavity and the roof of the abdominal cavity