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Physiology Stack 1
Weeks 1-6
| What is Homeostasis | Homeostasis is the maintenance of a stable internal environment within the body, essential for normal body function and survival |
| Name the four major biomolecules essential for life. | Carbohydrates, lipids, proteins, and nucleic acids. |
| What is the function of ribosomes in a cell? | Ribosomes are responsible for synthesizing proteins by translating messenger RNA mRNA into amino acid chains. |
| Define epithelial tissue | Epithelial tissue covers body surfaces, lines cavities, and forms glands, serving protective, secretory, and absorptive functions. |
| What is the role of osteoblasts? | Osteoblasts are bone-forming cells responsible for synthesizing and mineralizing bone matrix. |
| What is the function of synovial fluid? | Synovial fluid lubricates joints, reducing friction and providing nutrients to cartilage. |
| What is the sliding filament model of muscle contraction? | It describes how muscle fibers contract by the sliding of actin and myosin filaments past each other, shortening the sarcomere. |
| What is the role of the sarcoplasmic reticulum in muscle contraction? | The sarcoplasmic reticulum stores and releases calcium ions, which are crucial for initiating muscle contraction. |
| What is a motor unit, and why is it important in muscle function? | A motor unit consists of a single motor neuron and all the muscle fibers it controls. It’s important because it determines the precision and strength of muscle contractions. |
| What are the main characteristics of cardiac muscle tissue? | Cardiac muscle is striated, involuntary, branched, and contains intercalated discs that allow coordinated, rhythmic contractions of the heart. |
| What is the difference between red and white muscle fibers? | Red fibers are slow-twitch, fatigue-resistant, and rich in mitochondria; white fibers are fast-twitch, fatigue-prone, and adapted for rapid, powerful contractions. |
| What is the function of the intercalated discs in cardiac muscle? | Intercalated discs allow for synchronized contraction of cardiac muscle by facilitating rapid transmission of action potentials between cells. |
Created by:
Sennecab10
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