Abs

Question 1

What is the rectus abdominis

Answer 1

1 of the 4 muscle layers of the abdominal wall. It’s a long flat rectangular muscle that sits on your torso

Question 2

Where does the rectus abdominis originate?

Answer 2

The rectus abdominus originates at the pubic crest

Question 3

Where does the rectus abdominis insert?

Answer 3

The costal cartilage of the 5th, 6th and 7th ribs and the xiphoide process

Question 4

What is the function of the rectus abdominis?

Answer 4

The rectus abdominis is the part of the abdominal wall that pulls the torso forward.
When the abs compress the insertion moves closer to the origin. (like crunches),
but if the ribcage is fixed, the pelvis will move closer.
O they can be brought together when neither is fixed

Question 5

What tendon is on the side of the rectum abdominis

Answer 5

linea semilunaris

Question 6

what tendon is in the middle of the rectus abdominis

Answer 6

The linea alba or “The center line”

Question 7

What tendon is horizontal and cuts the rectus abdominis into 6 parts

Answer 7

the tendinous intersection. they appear as shallow grooves.

Question 8

describe why abs are more prominent on muscular people.

Answer 8

As the muscle grows during exercise, the tendons stays the same the the groove grows deeper

Question 9

What part of the linea alba bends sideways and why

Answer 9

The linea alba only bends latterally above the naval, because it matches the curves of the lumbar vertebrae. remember the bottom 2 vertebrea are ocked and only the top 3 move

Question 10

Why can’t the linea alba be seen on most people.

Answer 10

fat covers the linea alba on most people

Question 11

What does the linea semilunaris divide between?

Answer 11

The linea semilunaris defines the border between the rectus abdominis and the external obliques

Question 12

How long is the rectus abdominis horizontally?

Answer 12

The rectus abdominis is a bit shorter the distance between the nipples

Question 13

Describe the shape of the first section of tendinous intersection

Answer 13

The first section of the tendinous intersection is diagonal and falls in front of the thoracic arch

Question 14

describe the shape of the 2nd and 3rd sections of the tendinous intersection

Answer 14

Both the second and 3rd sections are horizontal and the 3rd aligns with the naval. the 3 sections create the 6 pack

Question 15

describe the portion below the 6 pack

Answer 15

The “40 oz” is below the belly button, and you can only see the top portion of the center line

Question 16

Describe the shape of the tendinous intersection on the surface.

Answer 16

The tendinous intersections can be mismatched and shaped in a c or s curve.