The Pelvis (the Pelvic Bones And Muscles)

Question 1

What is the Pelvic Cavity?

Answer 1

Basin-shaped space which is bound by skeletal framework, and is lined partially by peritoneum

Question 2

Where is the pelvic cavity located?

Answer 2

Inferior to the abdominopelvic cavity

Question 3

What is included in the pelvic cavity?

Answer 3

1. Reproductive organs
2. Bladder
3. Rectum

Question 4

How is the pelvis divided?

Answer 4

True and false pelvis

Question 5

How is the true and false pelvis divided?

Answer 5

Based on an oblique plane defined by an imaginary line. Which extends from symphysis pubis (anterior) to the sacrum (posterior). Or the Pelvic brim

Question 6

What does the true pelvis contain?

Answer 6

Birth canal for females and internal reproductive organs

Question 7

Where is the true pelvis located?

Answer 7

Inferior to the pelvic brim, between the pelvic inlet and outlet.

Question 8

What is another name for the true pelvis?

Answer 8

Lessor pelvis

Question 9

What is another name for the false pelvis?

Answer 9

Greater pelvis

Question 10

Where is the false pelvis located?

Answer 10

Superior to pelvic brim.

Question 11

What structures are in the false pelvis?

Answer 11

1. Bowel
2. Bladder when full
3. Uterus in pregnancy

Question 12

What is the purpose of the bony structure of the pelvis?

Answer 12

1. Supports and transmits weight of body
2. Protects pelvic viscera
3. Bony support for birth canal in females
4. Major site of muscle attachments
5. Attaches the legs to torso

Question 13

What are the components of the bony components of the pelvis?

Answer 13

1. Sacrum
2. Coccyx
3. Hip/ innominate bones (ilium, pubis, ischium)

Question 14

What is the sacrum?

Answer 14

Triangular shaped bone which is fused with 5 vertebra.

Question 15

Where is the sacrum located?

Answer 15

On the posterior

Question 16

What does the S1 of the sacrum articulate with?

Answer 16

L5

Question 17

Where is the sacral promontory located?

Answer 17

Anterior boarder of S1

Question 18

What does the S5 of the sacrum articulates with?

Answer 18

Coccyx

Question 19

What does the sacrum connect with?

Answer 19

OS coxae (Hip/innominate bone) aka the sacroiliac joints

Question 20

What is a coccyx?

Answer 20

Structure which is located inferior to sacrum, which is a muscle attachment that also has 3-5 rudimentary vertebrae.

Question 21

What is the coccyx also known as?

Answer 21

Tailbone

Question 22

What are the parts of the hip bones?

Answer 22

3 parts
1. Ilium
2. Pubis
3. Ischium

Question 23

What is the hip bones also called as well?

Answer 23

Os Coxae or innominate

Question 24

What is the illium?

Answer 24

Largest and most superior bones in the hips. Which consists of 3 parts
1. Ala
2. Fossa
3. Crest

Question 25

What is the ala?

Answer 25

Large, flaring portion of the ilium

Question 26

What is the fossa of the ilium?

Answer 26

Inner aspect of ala

Question 27

What is the crest of the ilium?

Answer 27

Most superior portion of the hip

Question 28

What is the pubis?

Answer 28

Body and 2 rami, bodies join midline to form symphysis

Question 29

What is the ischium?

Answer 29

Posterior and inferior part of the hip bones. Usually the part that supports us while we sit

Question 30

What does the pelvic muscles do?

Answer 30

Assists in movement, stabilization, and protection of structure.

Question 31

How are the pelvic muscles classified?

Answer 31

In terms of function and location - pelvic wall - pelvic diaphragm

Question 32

What are pelvic wall muscles?

Answer 32

1. Psoas 2. Iliacus 3. Iliopsoas 4. Obturator 5. Piriformis

Question 33

What is the psoas muscle?

Answer 33

Lateral to vertebral bodies; extends from upper abdomen to pelvis

Question 34

What is the iliacus muscles?

Answer 34

Triangular muscles which extends from iliac crest and sacrum to join with the psoas

Question 35

What is the Iliopsoas muscle?

Answer 35

Muscle which is anterior over pelvic brim which inserts into femur and helps flex the thigh

Question 36

What is the Obturator muscle?

Answer 36

Internal and external parts which forms the side walls of the pelvis, which aids in the lateral rotation of the thigh

Question 37

What is the piriformis?

Answer 37

Triangular shaped muscle which forms a large part of the posterolateral wall of the pelvic cavity. Which is responsible for lateral rotation and abduction

Question 38

What is th elevator ani muscles?

Answer 38

Largest and most important muscles. Integrity of the pelvic floor depends on the function of these muscles

Question 39

What is the coccygeus?

Answer 39

Smaller than th elevator ani, which form the posterior aspect of the pelvic floor