Chapter 6 Anatomy Layering and Sectional Anatomy

Question 1

Abdominal Cavity

Answer 1

Division of the ventral cavity and peritoneal cavity that extends inferiorly from the diaphragm and is continuous with the pelvic cavity through the pelvic inlet.

Question 2

Diaphragm

Answer 2

Large muscle that assists inspiration and divides the ventral cavity into upper thoracic and lower peritoneal cavities

Question 3

Dorsal Cavity

Answer 3

One of two main body cavities. Situated on the posterior (dorsal) side of the body. Contains the cranial cavity and spinal.

Question 4

False Pelvis

Answer 4

Descriptive term given to the area superior to the pelvic inlet (linea terminalis) and inferior to the iliac crests. Also called greater pelvis or pelvis major.

Question 5

Greater Sac

Answer 5

Peritoneal compartment of the abdominal cavity that extends from the diaphragm to the pelvis and covers the width of the abdomen.

Question 6

Intraperitoneal

Answer 6

Refers to certain body structures enclosed within the parietal peritoneal sac and covered by the peritoneum. They are connected to the cavity wall by mesentery, double folds of peritoneum.

Question 7

Lesser Sac

Answer 7

Peritoneal compartment posterior to the stomach that is a diverticulum of the greater sac. Also known as the omental bursa.

Question 8

Linea Terminalis

Answer 8

Imaginary line drawn from the symphysis pubis around to the sacral promontory, marking the dividing plane between the true and false pelvis. The circumference of this plane is termed the pelvic inlet.

Question 9

Mesentery

Answer 9

Double folds of peritoneum that connect intraperitoneal body structures to the cavity wall.

Question 10

Omentum

Answer 10

A double layer of peritoneum that extends from the stomach to adjacent abdominal organs. Classified as two parts; the greater omentum and the lesser omentum.

Question 11

Parietal Peritoneum

Answer 11

Portion of peritoneal lining that forms a closed sac (except in females, in whom a portion of the fallopian tubes opens into it)

Question 12

Pelvic Cavity

Answer 12

Division of the ventral cavity and peritoneal cavity that extends superiorly from the iliac crests to the pelvic diaphragm inferiorly. Continuous with the abdominal cavity.

Question 13

Pelvic Inlet

Answer 13

Describes the circumference of the linea terminalis

Question 14

Peritoneal Cavity

Answer 14

Division of the ventral cavity. Largest body cavity, encompassing the abdomen and pelvis. Also known abdominopelvic cavity.

Question 15

Peritoneum or Peritoneal Membrane

Answer 15

Thin, membranous sheet of tissue that secretes serous fluid. Serves as a lubricant and facilitates free movement between organs.

Question 16

Retroperitoneal

Answer 16

Refers to certain body structures that lie behind or posterior to the parietal peritoneal sac. Only their anterior surface is in contact with the peritoneal lining.

Question 17

Thoracic Cavity

Answer 17

Division of the ventral cavity. An enclosed area that basically corresponds to the rib cage. Separated from the abdominal cavity by the diaphragm. Contains the bronchi and lungs.

Question 18

True Pelvis

Answer 18

Descriptive term given to the region deep to the pelvic inlet (linea terminalis). Also called lesser pelvis or pelvis minor.

Question 19

Ventral Cavity

Answer 19

One of two main body cavities. Situated on the anterior (ventral) side of the body. Divided by the diaphragm into abdominopelvic (or peritoneal) cavity and thoracic cavity.

Question 20

Visceral Peritoneum

Answer 20

Portion of peritoneal lining that completely covers various organs and body structures.