Question

*A ________ detects a change in a regulated variable and sends that information to a(n) ________ which relays signals to a(n) ________, usually a muscle or a gland.*

A) sensor : integrating center : effector
B) sensor : effector : integrating center
C) stimulus : receptor : organ system
D) receptor : stimulus : regulated variable

Answer 1

The correct sequence is receptor (sensor) detecting change, sending information to the integrating center, which then signals the effector, typically a muscle or gland, to maintain homeostasis.

Step-by-step explanation:

A receptor detects a change in a regulated variable and sends that information to a(n) integrating center which relays signals to a(n) effector, usually a muscle or a gland. The correct sequence for this process is: A) sensor : integrating center : effector.

Here is how the process works in steps:

1. A receptor or sensor detects a change in the environment or in the body's internal conditions.
2. This information is sent to an integrating center, often the brain, which evaluates the change and determines the appropriate response.
3. The integrating center then sends signals to an effector, which can be a muscle leading to movements or a gland that secretes hormones, to enact the necessary change to maintain homeostasis.

This process is part of a negative feedback loop used to maintain homeostasis in an organism. The pituitary gland, for example, can be considered a control center in some endocrine feedback loops where it receives signals from the hypothalamus and releases hormones that influence other glands.