What is the primary function of epithelial tissue?

• Facilitate muscle contraction

• Absorb nutrients and secrete substances

• Sensing stimuli and processing information

• Support and connect other tissues

Which type of muscle tissue is responsible for involuntary movements?

• All of the above

• Smooth muscle

• Cardiac muscle

• Skeletal muscle

What is the basic unit of life?

• Tissue

• Organ

• Cell

• Organ system

Which of the following is NOT a type of connective tissue?

• Adipose tissue

• Blood

• Epithelial tissue

• Bone

What is the role of buffers in the blood?

• To maintain blood pH at about 7.4

• To increase blood pH

• To transport oxygen

• To decrease blood pH

Which organ system is responsible for breaking down food?

• Circulatory system

• Nervous system

• Digestive system

• Respiratory system

What type of cells are neurons?

• Connective cells

• Muscle cells

• Epithelial cells

• Nerve cells

What is the extracellular matrix primarily made of in connective tissues?

• Nerve fibers

• Epithelial cells

• Protein fibers

• Muscle fibers

Which type of epithelial cell structure increases surface area for absorption?

• Cilia

• Flagella

• Microvilli

• Tight junctions

What happens to blood pH when buffering capacity is exhausted?

• It becomes neutral

• It decreases rapidly

• It remains stable