Rat Practical Review

Which species of rat are we studying?

• a) American
• b) Mentawai
• c) Bush
• d) Norway

Which plane separates the superior half of the rat (eyes, back, ears) from the inferior half of the rat (legs, tail)?

• a) Sagittal
• b) Frontal
• c) Transverse
• d) Mid-sagittal

How many openings exist in the female urogenital area, excluding the anus? How many openings exist in the male urogenital area, excluding the anus?

• a) 3, 3
• b) 3, 2
• c) 2, 2
• d) 2, 1

What is the name for the long stiff hairs located on the face that have a sensory function?

• a) Whiskers
• b) Vibrissae
• c) Pinna
• d) Nares

How many mammary papillae are generally found on a female rat?

• a) 2
• b) 6
• c) 12
• d) 24

What is the name of the muscle attached to the skin in the head/throat area?

• a) platysma
• b) cutaneous
• c) nictitating
• d) perimysium

When a muscle contracts, which attachment point will move? Which attachment point will remain stationary?

• a) origin/insertion
• b) insertion/origin

Muscle fibers of any particular muscle will almost always run in opposite directions.

• a) True
• b) False

What is the name of the tough connective tissue that wraps around individual muscles?

• a) cartilage
• b) serous membrane
• c) perimysium
• d) peritoneum

Which muscle in the rat is the major chewing muscle?

• a) digastric
• b )sternohyoid
• c) mylohyoid
• d) masseter