CBIO 3010 - Practical 3

Labs 7 & 8 (except skeletal framework); cat/pig/sheep photos referenced from https://quizlet.com/737384959/cbio-3010l-practical-3-flash-cards/ ; https://quizlet.com/682447142/cbio3010-lab-practical-3-cat-flash-cards/ ; https://quizlet.com/491834373/cbio-3010-practical-3-flash-cards/

What cat thoracic muscles are superficial?

• pectoralis major

• pectoralis minor

What cat thoracic muscles are deep?

• serratus ventralis

• intercostalis externus

• scalene bundle

blue

pectoralis major (cat)

red

pectoralis minor (cat)

red

serratus ventralis (cat)

intercostalis externus (cat)

blue

scalene bundle (cat)

origin of pectoralis major (cat)

manubrium & sternum

origin of pectoralis minor (cat)

sternum & xiphoid process

insertion of pectoralis major (cat)

humerus

insertion of pectoralis minor (cat)

humerus

action of pectoralis major (cat)

draws forelimb towards midline

action of pectoralis minor (cat)

draws forelimb towards midline

action of intercostalis externus (cat)

protracts the ribs

action of scalene bundle (cat)

flexes & rotates the neck

What vessels are in the pectoral girdle?

• axillary artery

• brachial artery

What nerves are in the pectoral girdle?

• axillary nerve

• musculocutaneous nerve

• median nerve

What vessels are in the antebrachium?

• radial artery

• ulnar artery

What nerves are in the antebrachium?

• radial nerve

• ulnar nerve

What vessels are in the thigh?

• superior gluteal artery

• femoral artery

• femoral vein

What nerves are in the thigh?

• sciatic nerve

• femoral nerve

What nerves are in the leg/shank?

• tibial nerve

• deep peroneal nerve

head of ribs

tubercle of ribs

external surface of ribs

neck of ribs

internal surface of ribs

manubrium of sternum

gladiolus (body) of sternum

sternal angle of sternum

xiphoid process of sternum

jugular notch of sternum

articular facets of sternum

external oblique (cat)

action of external oblique (cat)

compresses abdominal region

internal oblique (cat)

action of internal oblique (cat)

compresses abdominal region

transverse abdominis (cat)

action of transverse abdominis (cat)

compresses abdominal region

rectus abdominis (cat)

action of rectus abdominis (cat)

compresses abdominal region & flexion of trunk

linea alba (cat)

R1

larynx (cat)

larynx (human)

R2

trachea (cat)

trachea (human)

R3

left primary bronchus (cat)

R4

right primary bronchus (cat)

left primary bronchus (human)

right primary bronchus (human)

secondary bronchi (human)

R6

anterior lobe of left lung (cat)

R7

medial lobe of left lung (cat)

R8

posterior lobe of left lung (cat)

R9

anterior lobe of right lung (cat)

R10

medial lobe of right lung (cat)

R11

posterior lobe of right lung (cat)

R12

accessary lobe of right lung (cat)

superior lobe of right lung (human)

median lobe of right lung (human)

inferior lobe of right lung (human)

superior lobe of left lung (human)

inferior lobe of left lung (human)

What is the difference in lobe number between human lungs and cat lungs?

Cat lungs have 7 total lobes (4 on the right, 3 on the left), humans have 5 total lobes (3 on the right, 2 on the left)

R13

diaphragm (cat)

diaphragm (human)

parietal pericardium of heart (human)

H1

apex of heart (cat)

apex of heart (human)

H2

anterior interventricular sulcus of heart (cat)

anterior interventricular sulcus of heart (human)

H3

anterior interventricular artery of heart (cat)

anterior interventricular artery of heart (human)

The anterior interventricular artery is a branch of which artery?

left coronary artery

H4

left ventricle of heart (cat)

left ventricle of heart (human)

H5

right ventricle of heart (cat)

right ventricle of heart (human)

left atrium of heart (cat)

left atrium of heart (human)

(highlighted green)

right atrium of heart (cat)

right atrium of heart (human)

H8

pulmonary trunk of heart (cat)

pulmonary trunk of heart (human)

aorta of thoracic vasculature (cat)

aorta of thoracic vasculature (human)

What third branch of the aortic arch does the cat not have that humans do?

left common carotid artery

aortic arch of thoracic vasculature (cat)

aortic arch of thoracic vasculature (human)

Beginning at the right atrium, what is the pathway of blood in the heart and body?

1. right atrium

2. tricuspid valve

3. right ventricle

4. pulmonary (right semilunar) valve

5. pulmonary trunk

6. lungs

7. pulmonary veins

8. left atrium

9. bicuspid valve

10. left ventricle

11. aortic (left semilunar) valve

12. aorta

13. body

14. anterior & posterior vena cavae

thoracic (dorsal) aorta of thoracic vasculature (cat)

thoracic (dorsal) aorta of thoracic vasculature (human)

pulmonary arteries of thoracic vasculature (cat)

pulmonary arteries of thoracic vasculature (human)

brachiocephalic artery of thoracic vasculature (cat)

brachiocephalic artery of thoracic vasculature (human)

right subclavian artery of thoracic vasculature (cat)

right subclavian artery of thoracic vasculature (human)