14. What are the three types of muscular tissue?
The three types of muscular tissue are skeletal (voluntary), smooth (involuntary), and cardiac (heart muscle).
15. What distinguishes cardiac muscle cells from others?
Cardiac muscle cells are striated, involuntary, and interconnected, allowing them to contract rhythmically.
16. Explain the function of nerve tissue.
Nerve tissue, composed of neurons, is responsible for transmitting signals throughout the body, facilitating communication and coordination.
17. What is the fluid matrix in blood?
Blood has a fluid matrix called plasma, which suspends red blood cells, white blood cells, and platelets, and carries nutrients and waste products.
18. What are tendons and ligaments?
Tendons connect muscles to bones, providing strength, while ligaments connect bones to other bones, allowing flexibility.
19. What is areolar connective tissue, and where is it found?
Areolar connective tissue is loose connective tissue found between skin and muscles, around blood vessels and nerves, and in bone marrow, supporting internal organs.
20. Where is adipose tissue located, and what is its function?
Adipose tissue, or fat tissue, is located beneath the skin and around internal organs, serving to store energy and provide insulation.
21. What is the purpose of guard cells?
Guard cells regulate the opening and closing of stomata, facilitating gas exchange and transpiration in plants.
22. What role does cartilage play in the body?
Cartilage provides cushioning and flexibility at joints, smooths bone surfaces, and is found in structures like the nose and ears.
23. How do animal tissues adapt to their lifestyle compared to plant tissues?
Animal tissues are designed for movement and varied functions due to active locomotion, while plant tissues are structured to maintain stability and support growth.
24. Why is blood considered a connective tissue?
Blood is classified as a connective tissue because it connects different body systems through transport and distribution of nutrients and waste products.
25. What is the significance of the thickened walls in sclerenchyma cells?
The thickened walls of sclerenchyma cells provide structural support and rigidity, essential for the plant’s growth and stability.
