PART B: Assessments Match the tissues in column A with the characteristics in column B. Place the letter of your choice in the space provided. (Some answers may be used more than once.) A2 A3 Column A Column B a. Cardiac muscle 1. Coordinates, regulates, and integrates body functions b. Nervous tissue 2. Contains intercalated discs c. Skeletal muscle d. Smooth muscle 3. Muscle that lacks striations 4. Striated and involuntary 5. Striated and voluntary 6. Contains neurons and neuroglia 7. Muscle attached to bones 8. Muscle that composes heart 9. Moves food through the digestive tract 10. Conducts impulses along cellular processes 11. Muscle under conscious control 12. Muscle of blood vessels and iris
The Correct Answer and Explanation is :
Answers:
- b. Nervous tissue → Coordinates, regulates, and integrates body functions
- a. Cardiac muscle → Contains intercalated discs
- d. Smooth muscle → Muscle that lacks striations
- a. Cardiac muscle → Striated and involuntary
- c. Skeletal muscle → Striated and voluntary
- b. Nervous tissue → Contains neurons and neuroglia
- c. Skeletal muscle → Muscle attached to bones
- a. Cardiac muscle → Muscle that composes heart
- d. Smooth muscle → Moves food through the digestive tract
- b. Nervous tissue → Conducts impulses along cellular processes
- c. Skeletal muscle → Muscle under conscious control
- d. Smooth muscle → Muscle of blood vessels and iris
Explanation:
The human body has four main types of tissues: epithelial, connective, muscle, and nervous tissue. This assessment focuses on muscle tissue and nervous tissue, both of which are essential for body movement, function, and coordination.
- Cardiac Muscle:
- Found only in the heart.
- It is striated (striped appearance) and involuntary (not under conscious control).
- Contains intercalated discs, which help in synchronized contraction of the heart.
- Skeletal Muscle:
- Attached to bones and responsible for voluntary movements (under conscious control).
- Striated and has multiple nuclei per cell.
- Examples include muscles used for walking, lifting, and facial expressions.
- Smooth Muscle:
- Found in the walls of internal organs such as the digestive tract, blood vessels, and iris of the eye.
- Lacks striations and is involuntary (functions without conscious effort).
- Helps move food through the digestive system (peristalsis) and regulates blood flow by adjusting blood vessel diameter.
- Nervous Tissue:
- Composed of neurons (which conduct electrical impulses) and neuroglia (which support and protect neurons).
- Found in the brain, spinal cord, and peripheral nerves.
- It coordinates, regulates, and integrates body functions by transmitting signals.
Understanding the differences between these tissues is crucial in physiology, medicine, and health sciences, as each plays a vital role in maintaining homeostasis and body function.