Neurons and Muscle Cells Diseases Quiz
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Questions and Answers

Why is understanding the structure and function of a 'normal' cell important?

  • To begin understanding pathophysiology (correct)
  • To provide sensory information
  • To replicate often to replace damaged cells
  • To communicate between cells, tissues, and systems

What is a key role of epithelial cells in the body?

  • Replicating often to replace damaged or dead cells
  • Transporting filtered materials through active-transport systems (correct)
  • Providing sensory information to the body
  • Absorbing ions and organic molecules

In what ways can injury to cellular components lead to disease?

  • By repairing the damage through innervation
  • By causing cell replication
  • By enhancing sensory information processing
  • By inducing cell dysfunction or death (correct)

Which of the following is NOT a characteristic of epithelial cells?

<p>Providing structural support (D)</p> Signup and view all the answers

What role do connective tissue cells play in diseases like Marfan syndrome or Rheumatoid arthritis?

<p>Promoting inflammation and affecting joint health (C)</p> Signup and view all the answers

Which disease is primarily associated with neural cells?

<p>Parkinson's disease (C)</p> Signup and view all the answers

What is the function of the basal surface of epithelial cells?

<p>Providing structural support to surrounding tissues (A)</p> Signup and view all the answers

Which of the following is an example of a disease primarily targeting epithelial cells?

<p>&quot;Peptic ulcers&quot; (D)</p> Signup and view all the answers

Which cells are critical for wound healing?

<p>Fibroblasts (D)</p> Signup and view all the answers

What is the main function of connective tissue cells?

<p>Supporting body structures (A)</p> Signup and view all the answers

Which proteins are two major components of connective tissue?

<p>Collagen &amp; Elastin (A)</p> Signup and view all the answers

What type of muscle is characterized by being involuntary?

<p>Smooth Muscle (C)</p> Signup and view all the answers

What stain is used to visualize collagen in tissues?

<p>Picrosirius red stain (D)</p> Signup and view all the answers

Which diseases involve abnormal immune activity and inflammation targeted at connective tissue?

<p>Rheumatoid Arthritis (A)</p> Signup and view all the answers

Where is cardiac muscle predominantly found?

<p>Heart (D)</p> Signup and view all the answers

What cellular component is important for maintaining the structural framework of tissues?

<p>Fibroblasts (B)</p> Signup and view all the answers

What is the limiting factor for the diffusion of molecules across cell membranes?

<p>Phospholipid bilayer of the cell membrane (B)</p> Signup and view all the answers

Which proteins control the diffusion of solutes across the cell membrane?

<p>Transport proteins (A)</p> Signup and view all the answers

How does dietary salt overload affect the total extracellular fluid (ECF) solute concentration?

<p>Increases ECF solute concentration (C)</p> Signup and view all the answers

What is osmosis defined as?

<p>Movement of water across a semipermeable membrane (C)</p> Signup and view all the answers

What does tonicity refer to in relation to an extracellular solution?

<p>The ability to make water move into or out of a cell by osmosis (D)</p> Signup and view all the answers

Why is sodium considered a prime determinant of extracellular fluid (ECF) volume?

<p>Sodium impacts the total concentration of solutes in ECF (B)</p> Signup and view all the answers

What is osmolarity defined as?

<p>Total concentration of all solutes in a solution (C)</p> Signup and view all the answers

"Water follows salt!" explains which phenomenon related to fluid distribution?

<p>Relationship between sodium and water balance (C)</p> Signup and view all the answers

What is the main function of neurons in the nervous system?

<p>Initiate, integrate and conduct electrical signals to other cells (C)</p> Signup and view all the answers

Which disease is characterized by muscle cell dysfunction and affects individuals like Lou Gehrig's Disease?

<p>Atrophy (C)</p> Signup and view all the answers

What is the function of the cell membrane in cells?

<p>Detect chemical signals from other cells (C)</p> Signup and view all the answers

Which statement about fluid compartments in the body is correct?

<p>Interstisial plasma volume makes up 80% of extracellular fluid (D)</p> Signup and view all the answers

What is a characteristic of involuntary muscles in the body?

<p>Lack control over their movement by will (D)</p> Signup and view all the answers

What is a common feature of diseases like Multiple Sclerosis and Stroke?

<p>Affecting neurons or nerve cells (A)</p> Signup and view all the answers

Which ion is found in higher concentration in intracellular fluid compared to extracellular fluid?

<p>$K^+$ (D)</p> Signup and view all the answers

How do membranes contribute to the body?

<p>Separate or compartmentalize ions and molecules (C)</p> Signup and view all the answers

What type of solution is 0.9% saline solution?

<p>Isotonic (C)</p> Signup and view all the answers

In which direction does water move when a cell is placed in a hypertonic solution?

<p>Out of the cell (A)</p> Signup and view all the answers

Which process involves increasing or decreasing the number of active receptors on the cell surface?

<p>Cell Regulation (C)</p> Signup and view all the answers

What is the function of graded potentials in neurons?

<p>Initiate action potentials (B)</p> Signup and view all the answers

Which type of signal communication involves autocrine, paracrine, endocrine, and neuroendocrine signaling?

<p>Chemical signaling (D)</p> Signup and view all the answers

What is the movement of ions across the cell membrane primarily dependent on?

<p>Concentration gradient (A)</p> Signup and view all the answers

In an electrical communication system, what is the role of neurons/nerves concerning signal transmission?

<p>Carrying electrical signals (C)</p> Signup and view all the answers

What happens to the resting membrane potential when a neuron hyperpolarizes?

<p>It increases (B)</p> Signup and view all the answers

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