Cells and tissues

How many cells are estimated to be in the human body?

• 5 million

• 100 million

• 500 billion

• 32 trillion

Which type of tissue lines the inside and outside of the body?

• Nervous tissue

• Epithelial tissue

• Muscle tissue

• Connective tissue

What is the primary function of glandular epithelium?

• Support

• Secretion

• Protection

• Absorption

What is the origin of all connective tissue?

• Epidermis

• Endoderm

• Mesenchyme

• Ectoderm

Which type of connective tissue is known for its liquid matrix?

• Cartilage

• Adipose

• Blood

• Bone

Which type of muscle tissue is responsible for voluntary movements?

• Smooth muscle

• Cardiac muscle

• Visceral muscle

• Skeletal muscle

What is the unique feature of cardiac muscle cells?

• They are spindle-shaped

• They have intercalated discs

• They are non-striated

• They are multinucleated

Which type of muscle tissue is found in the walls of hollow organs?

• Smooth muscle

• Skeletal muscle

• Cardiac muscle

• Striated muscle

What is the primary function of neurons?

• Transmit electrical signals

• Support and protect

• Provide insulation

• Store energy

Which cells in the nervous system provide support and protection?

• Neurons

• Efferent neurons

• Afferent neurons

• Glial cells