Gross Anatomy Of The Piggy-TBC

Question 0

Thoracic Body Cavity-Thoracic Inlet

Answer 0

Defines the cranial boundary of TBC
Allows passageway of for esophagus, trachea, and blood vessels and nerves
Boundaries: dorsal (first thoracic vertebrae)
Lateral (first rib)
VentrAl (cranial tip of sternum)

Question 1

Body Cavities

Answer 1

Thoracic (2)
Abdominal (1)
Pelvic (3)

Question 2

TBC-Ribs

Answer 2

Lateral boundary of TBC

Ribs is determined by the amount of thoracic vertebrae

Question 3

TBC-Sternum

Answer 3

The ventral boundary of the TBC
Provides attachment to the costal cartilages of the sternal ribs
Consists of three anatomical parts
 Cranial:manubrium
Middle: body
Caudal:meta sternum

Question 4

TBC- pectoral girdle

Answer 4

Attachment to the shoulder blade to the TBC is muscle, primarily, connective tissue
Rats and humans possess a clavicle which articulates with the scapula and manubrium forming a true bony connection with the TBC

Question 5

TBC-Thoracic Vertebrae

Answer 5

Defines the dorsal boundary of the TBC, including the dorsal end of each rib and the associated muscle and connective tissue
It is marked dorsally by well developed spinous processes(withers)

Question 6

TBC-diaphragm

Answer 6

Defines the caudal boundary of the TBC
Consists of connective tissue in the center and striated muscle extending from the connective tissue to the periphery
Muscle attachments include….
Costal:cartilage of the last few sternal ribs and behind this is the ribs at an increasing distance from their sternal ends
Sternal:upper surface of the xiphoid cartilage
LumbAr:attached to first few lumbar vertebrae by means of ligament

Question 7

TBC-Serous Membranes

Answer 7

Consists of a thin layer of connective tissue and single layer of epithelial cells cemented on it
Function: to secrete serous fluid for lubrication
Pleura:the major serous membrane of the TBC
-parietal layer:layer of pleura that lines the inner wall of the TBC
-visceral layer:layer of pleura that covers the lungs
-mediastinum:double layer of pleura formed by junction of right and left serous sacs near the midline of the thorax
Pericardium: serous membrane that surrounds the heart
-parietal layer:forms the pericardial sac
-visceral layer:found on surface of the heart

Question 8

TBC-Visceral of the TBC

Answer 8

Heart
Lungs
Part of trachea
Part of esophagus
Thymus, in young animal
Associated blood vessels and nerves