The Majority of the Mass in Our Universe Is Made

question 94

Multiple Choice

The majority of the mass in our universe is made up of

• A) planets.
• B) stars.
• C) galaxies.
• D) dust.
• E) dark matter.

Recognize the structural remnants of fetal circulation in the adult heart.

Describe the layers of the heart wall and their specific functions.

Understand the structure and function of cardiac muscle cells.

Identify the components responsible for the striated appearance of muscle cells.

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Definitions:

Litter Box

A container filled with absorbent material, such as sand or clay, used for the collection of urine and feces by cats and some other pets.

Conditioned Stimulus

A stimulus that, through association with an unconditioned stimulus, comes to produce a conditioned response.

Leash

A length of rope, chain, or material designed to control or lead an animal, typically attached to a collar.

Closet

A small enclosed space, typically in a room or building, used for storage, particularly of clothes.