Fetal Pig Dissection

Seriously AWESOME dissection site:http://

faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20Laboratory/Fetal%20Pig/Fetal%20Pig.htm

Virtual Fetal Pig Dissection

• http://www.whitman.edu/content/virtualpig

Important Systems

• External Anatomy• Muscular

• Circulatory (heart)• Respiratory• Digestive

• Urinary• Reproductive• Skeletal• Nervous (brain)

DAY 1External Anatomy, Mouth and the Muscular System

External Anatomy of the Fetal Pig

Mouth

Important Muscles (Ventral Pectoral Girdle)

• Masseter • Sternohyoid, Sternomastoid, Sternocephalic• Brachiocephalic• Biceps brachii• Superficial Pectoral• Deep pectoral• Serratus ventralis

Muscular System (Ventral Pectoral Girdle)

Important Muscles (Dorsal)

• http://www.jesuitnola.com/upload/biology/ory/fetal_pig_muscle_dissection.htm

• Latissimus dorsi• Trapezius

Important Muscles of the Leg

• Gluteus medius, gluteus maximus

• Biceps femoris

Once you have identified the important muscles…

• Read through the lab about the remaining systems

• Make sure you know which incisions you will be making and what you will encounter.

DAY 2The neck, cardiovascular system

Fetal Pig Neck and Cardiovascular System

• Larynx• Trachea• Bronchi

• Esophagus

• Thymus and Thyroid Glands

Heart and Associated Blood Vessels

• Heart:– 2 upper atria– 2 lower ventricles

• Vena Cava (Anterior and Posterior)• Pulmonary Artery • Aorta

Blood Vessels of the Fetal Pig

• Carotid Artery• Jugular Vein

• Umbilical vein: from placenta to fetus• Umbilical arteries: pelvic region to placenta

• Renal Vein• Renal Artery

Heart

After identification of the heart and associated blood vessels…

• Remove the heart

• Dissect the heart (if possible)• Locate the blood vessels• Be sure to identify how blood flows through

the fetal pig heart, chambers of the heart

• Move on to the respiratory system

Respiratory Structures

• Larynx– With vocal cords

• Trachea• Bronchi• Bronchioles• Lungs

• Diaphragm

Digestive System• Esophagus• Cardiac sphincter• Stomach• Pyloric sphincter• Small Intestine

– Duodenum– Jejunum– Ileum

• Cecum• Large Intestine (colon)• Rectum• Anus

Digestive System Accessory Organs

• Liver• Gall bladder• Pancreas

REMOVE THE INTESTINES (AND THE REST OF THE DIGESTIVE SYSTEM, IF DESIRED)

Now, on to the urinary system!

DAY 3The urinary system, reproductive system, skeletal system

Urinary System

• Kidneys– Cortex and medulla– Renal pyramids

• Ureter• Urinary bladder• Urethra • (Adrenal glands)

Reproductive System: Male

• Testes• Epididymus• Vas deferens• Seminal vesicles • Prostate gland• Bulbourethral

glands• Penis

Reproductive System: Female

• Ovaries• Uterus and

uterine horns• Vagina

The Skeletal System

• Skull• Vertebrae• Ribs• Sternum• Scapula• Pelvis

The Skeletal System

• Upper Limb:– Humerus– Radius– Ulna

• Lower Limb:– Femur– Tibia– Fibula