Homeostasis
This term refers to the body’s ability to maintain a stable internal environment.
Homeostasis
The two main systems that coordinate homeostasis in the body.
The smallest unit of an element that retains its chemical properties.
Atoms
These biomolecules are the body’s main source of quick energy.
Carbohydrates
A patient is shivering post-op. Which feedback type is occurring, and what is its purpose?
Negative feedback to restore core temperature
The internal environment is made up of this fluid that surrounds all cells.
Interstitial Fluid
What system contributes to homeostasis by absorbing nutrients?
A nurse prepares to give calcium gluconate IV. This involves which type of chemical bond within the compound?
Ionic Bond
Chemotherapy targets DNA replication. Which biomolecule is directly affected?
Nucleic Acids
These detect specific conditions in the body such as temperature or blood pressure.
Receptors
These three components make up a homeostatic control system: receptors, a control center, and _____
A client taking steroids shows suppressed immune response. Which system’s function is being impaired?
Endocrine System
Water has a high heat capacity. Why is this property important for homeostasis in the human body?
It allows the body to resist rapid temperature changes
A patient with severe burns requires increased intake of these biomolecule building blocks for wound healing.
Amino Acids (Proteins)
A laboring patient receives oxytocin, intensifying contractions. Which mechanism is this?
Positive Feedback
The part of the brain that acts as a control center for temperature regulation.
Hypothalamus
A patient has shortness of breath, high CO₂, and low O₂. Which organ system is failing to maintain homeostasis?
Respiratory System
Carbon-14 differs from Carbon-12 in what way
Carbon 14 has 2 more neutrons
A patient with cystic fibrosis has thick mucus due to abnormal processing of these proteins.
Membrane Transport Proteins
When body temperature drops, receptors in the skin and hypothalamus send signals to effectors. Which two main responses help restore body temperature?
Shivering/Vasoconstriction
A trauma patient is hemorrhaging. Which feedback process is activated to form a clot?
Positive Feedback
In septic shock, which two systems must respond immediately to maintain perfusion and oxygen delivery?
Cardiovascular and Respiratory System
Why are Na⁺ and K⁺ ions essential for nerve impulse transmission?
Creates electrochemical gradients across membranes
Phospholipids in the plasma membrane are described as amphipathic. What does this mean in terms of their structure?
They will have hydrophilic (polar) heads and hydrophobic (nonpolar) tails
If blood pH falls below 7.35, chemoreceptors detect the change. Which organ system responds most quickly to correct this imbalance?
Respiratory System