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The trachea is also called the windpipe and it connects the mouth to the lungs.   It is distinguished from the nearby esophagus by the presence of cartilage rings which prevent the airway from collapsing.   At the top of the trachea is the larynx, or the

Greater Omentum

The greater omentum is a fold of visceral peritoneum that hangs down from the greater curvature of the stomach.   It stores fat and also has an immune function, you might notice white spots embedded in the tissue – macrophage collections. The lesser omentum is found in

Label the Kidney

A = interlobar arteries and veins B = renal artery C = renal vein D = ureter E = renal pyramids F = minor calyx G = major calyx H = renal pelvis I = capsule J = medulla K = cortex L = nephrons

Quiz: Respiratory System

A:  Mouth | B: Thyroid Gland | C:  Trachea |  D: Primary Bronchi E:  Secondary Bronchi |  AB:  Bronchioles or Tertiary Bronchi AC:  Alveoli  |  AD:  Pleural Cavity |  AE:  Diaphragm BC:  Cardiac Notch |  BD:  Pharynx  |  BE:  Epiglottis CD:  Thyroid Cartilage (Adam’s Apple) |  CE:  Larynx DE:

Skull – Mandible

The mandible is the lower jaw and articulates with the skull at the coronoid process and the mandibular condyle.   Two perpendicular parts (creating a right angle) are called the rami (ramu, singular.)   A hole at the front of the mandible provide an opening for nerves

Stomach and Pyloric Sphincter Valve

The pyloric sphincter valve is found between the stomach and the duodenum of the small intestine.  It regulates the passage of food from the stomach into the small intestine.  On the dissected frog below, the black pin indicates the stomach and the red indicates the location of

Heart and Lungs

The heart and lungs of mammals are closely associated.  You can find the lungs located on either side of the heart and often toward the dorsal side of the thoracic cavity.  The lungs are soft, spongy tissue that are attached to the heart by the pulmonary artery

Label the Structures of the Pelvis

                Answers: A=sacrum B = ilium C = acetabulum D = ischium E = obturator foramen AB = pubis AC = symphysis pubis AD = sacroiliac joint This quiz is also available on quizlet.


The gallbladder is part of the biliary system (with the liver and the bile ducts) and has the primary job of storing bile.   Humans can live without a gallbladder, the removal of the organ is called a cholecystectomy.   Some animals don’t even have a gallbladder

Aorta and Pulmonary Vessels

Often students mistake the pulmonary artery for the aorta.  The pulmonary artery, or pulmonary trunk, is the most anterior vessel found on the heart; it is indicated below with a blue pencil.  The aorta lies behind the pulmonary trunk, indicated with the red pencil. When the heart