A&P Semester Exam Review 24-25

Front

What produces the pigment that gives hair its color?

Back

Melanocytes are the cells responsible for producing melanin, the pigment that gives hair its color.

Front

What are the types of muscle tissue?

Back

The three types of muscle tissue are smooth, skeletal, and cardiac. Actin is a protein, not a type of muscle tissue.

Front

What are the main parts of a neuron?

Back

The main parts of a neuron include the axon, dendrites, and cell body. Microglia are supportive cells, not part of the neuron structure.

Front

What percentage of a person’s total body weight is made up by skin?

Back

Skin makes up approximately 15% of a person’s total body weight.

Front

How often does the epidermis replace itself?

Back

The epidermis replaces itself approximately every 25-45 days.

Front

What is the function of melanocytes?

Back

Melanocytes produce melanin, which gives color to the skin, hair, and eyes.

Front

What are the characteristics of smooth muscle tissue?

Back

Smooth muscle tissue is involuntary, non-striated, and found in walls of hollow organs.

Front

What is the role of the axon in a neuron?

Back

The axon transmits electrical impulses away from the cell body to other neurons or muscles.

Front

What is the function of dendrites in a neuron?

Back

Dendrites receive signals from other neurons and transmit them to the cell body.

Front

What is the significance of microglia in the nervous system?

Back

Microglia act as the immune cells of the central nervous system, providing defense against pathogens.