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65 terms

Fetal Pig Structures & Functions

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Pinna
External part of ear in mammals; the auricle; used for hearing
External Nares
Nostrils of the pig; used in smell
Mammary Papilla
Nipples on the ventral of the pig; Used for breast feeding in females; On the two sides of the umbilical cord
Umbilical Cord
Supplies fetus with nutrients and other resources while in the mother's uterus; attaches to the placenta
Umbilical Vein
brings oxygenated blood to the fetus fromplacenta
Umbilical Arteries
Along the urinary bladder; brings de-oxygenated blood from the fetus
Genital Papilla
Only found in females; will develop into a vagina
Urogenital opening
Only in males; Part of male excretory and reproductive systems
Scrotal Sac
Only in males; contains the testes
Thymus Gland
Regulates and stimulates the immune system
Thyroid Gland
regulates metabolism; produces thyroxin and calcium
Adrenal Glands
Produces steroidal hormones
Pancreatic Islets
Control blood sugar levels
Trachea
Lined air tube; between larynx and bronchi in which air travels to the lungs
6 Lobes of the Lung
Organ consisting of spongy tissue which exchanges oxygen and carbon dioxide with the blood
Diaphragm
Sheet of muscle forming the bottom wall of the chest cavity; contracts while inhaling and relaxes while exhaling; separates thorax from abdomen
Tongue
muscular organ in the mouth; used for chewing, tasting, and swallowing; begins chemical digestion
Esophagus
Muscle-encased tube of alimentary canal that transports food from the pharynx to the stomach; Mechanical digestion
Stomach
Elastic, muscular sac where both chemical and
mechanical digestion take place; between small
Intestine and esophagus
Pancreas
Gland that makes digestive enzymes and secretes them into the small intestine; secretes insulin and
Glucagon into the blood; located behind the stomach
Liver
largest organ in the body; maintains metabolism; produces bile; stores glucose as glycogen; transforms ammonia to urea
Gallbladder
Organ that stores bile from the liver and releases it into the small intestine
Small Intestine
Long, narrow tube where most absorption occurs
Cecum
Pouch between the conjunction of the intestines; receives waste products coming from the small intestine
Large Intestine/Spiral Colon
Takes waste out of the body; removes water from waste products; stems from the cecum to the rectum
Rectum
Bottom segment of large intestine; leads to the anus
Anus
Place where solid waste products exit the body; basically a hole on the exterior
Heart
Multi-chambered, muscular organ that pumps blood throughout the body
Coronary Arteries & Veins
Bring nutrients and blood to the heart; removes waste products
Superior and Inferior Vena Cava
Bring de-oxygenated blood from the upper and lower thorax into the right atrium; located next to the aorta
Right Atrium
Receives de-oxgenated blood from the vena cavas; pumps it through the tricuspid valve to the right ventricle
Right Ventricle
Receives deoxygenated blood from the tricuspid valve and pumps it through the pulmonary semi-lunar valve
Pulmonary Artery
Blood vessel that receives deoxygenated blood from the pulmonary semi-lunar valve and carries it to the lungs
Pulmonary Veins
Take the reoxygenated blood from the lungs towards the heart; delivers it to the left atrium
Left Atrium
Recieves oxygenated blood from the pulmonary veins and pumps it through the bicuspid valve
Left Ventricle
Receives oxygenated blood from the bicuspid and pumps it through the aortic semi-lunar valve; more muscular than the right ventricle
Aorta
Artery that delivers oxygenated blood to the rest of the body; Three different branches emerge
Ductus Arteriosis
Blood vessel in fetuses; attaches pulmonary artery to aorta; closes shortly after birth
Foramen Ovale
Small hole in septum between the two atriums
Spleen
Produces and removes blood cells; part of immune system
Renal Arteries
Supplies oxygenated blood to the kidneys
Renal Veins
Removes deoxygenated blood from the kidneys
Kidneys
Main organ of excretory system; excretes waste products; regulates water and salt balance
Urinary Bladder
Sac that stores urine until it is eliminated from the body
Urethra
Tube leading from urinary bladder through which urine exits the body
Ovaries
Female reproductive organ that produces egg cells and hormones
Oviducts
Passageway that moves eggs away from the ovary and towards the uterus; usual site of fertilization
Uterus
Found in female mammals; area where young are usually conceived and develop into a fetus
Vagina
Functions as a birth canal; Passageway for menstrual flow; Receives the penis in reproduction; Leads uterus to body's exterior
Testes
Two sperm producing organs contained in the scrotum
Epididymus
Long, thin, coiled tube where sperm mature and are stored
Ductus Deferens
Tube that serves as a passageway for sperm between the epididymus and urethra
Seminal Vesicles
Secrete fluids and semen that help carry the sperm; located behind the bladder
Bulbourethral Glands
Pea-sized glands; located on both sides of the urethra; gives off seminal fluid to the urethra
Penis
Male reproductive organ; contains the urethra and also serves to eliminate urine from the body
Dorsal
Towards the surface of a quadraped's back
Ventral
Towards the underside of a quadraped
Medial
Towards the median plane; middle of body
Lateral
Pertaining to the side of the body
Cranial
Towards the head
Caudal
Towards the tail
Proximal
The end of the limb near its attachment
Distal
End of limb farthest from attachment
Anterior
Towards the front
Posterior
Towards the back