36 Questions
What is the primary reason why an animal's tissues and organ systems must act in concert with one another?
To perform their specialized functions effectively
What is the main function of thyroid-stimulating hormone (TSH)?
To stimulate release of thyroid hormone
What is the main difference between the endocrine system and the nervous system?
The pathway used to transmit signals
How do nerve impulses travel through the nervous system?
As changes in voltage along axons
What is the term for the signaling molecules released by the endocrine system?
Hormones
What is a key difference between the endocrine and nervous systems in terms of signal duration?
The endocrine system has a longer signal duration
What determines which cells respond to a particular hormone?
The presence of receptors for that hormone
What is an example of a function that the endocrine system is well adapted for?
Coordinating gradual changes in growth and development
What is a characteristic of the nervous system in terms of signal transmission?
It involves very short-range chemical signals
What is the advantage of the endocrine system's broadcasting of hormones throughout the body?
It allows hormones to reach cells in any location
What is a common goal of the endocrine and nervous systems?
To maintain a stable internal environment
What is an example of coordination of activity in an animal?
The regulation of blood flow to bring adequate nutrients and gases to the leg muscles during hunting
Which of the following best describes the role of the brain in the example of the wolf hunting?
Activating the leg muscles in response to cues
What is the primary mechanism by which hormones affect the body?
By releasing signaling molecules into the bloodstream
What determines the extent of a hormone's effect in the body?
The number of cells with receptors for the hormone
What is the key difference between the endocrine system and the nervous system in terms of signal transmission?
The routes used to transmit signals
Why is coordination between tissues and organ systems necessary for an animal's survival?
To enable the body to perform specialized functions effectively
What is the primary function of the two major systems for coordinating and controlling responses to stimuli?
To enable the body to respond to stimuli in a coordinated manner
How does the endocrine system convey information to target cells?
Through the release of hormones into the bloodstream
What is a key advantage of the nervous system's use of chemical signals?
It allows for very short-range communication between neurons
What is the primary function of the endocrine system in terms of the body's overall physiology?
To regulate growth and development
How do the endocrine and nervous systems differ in terms of signal type?
The endocrine system uses hormones, while the nervous system uses nerve impulses
What is the duration of the effects of hormones in the body?
Several minutes to several hours
Why is the nervous system well suited for directing immediate and rapid responses to the environment?
Because it uses electrical signals that can travel at a very fast speed
What is the primary function of the endocrine system in terms of the body's overall physiology?
Coordinating gradual changes that affect the entire body
How do nerve impulses travel through the nervous system?
Along axons as changes in voltage
What is a key advantage of the nervous system's transmission of information?
It is extremely fast
What is the primary function of the nervous system in terms of the body's overall physiology?
Directing immediate and rapid responses to the environment
What is the primary purpose of the coordination and control systems in animals?
to facilitate communication between organ systems
How do hormones act on target cells?
Directly on nearly every body tissue
What is unique about the signaling pathways used by the endocrine and nervous systems?
The type of pathway used is the same regardless of the location of the target cells
How do hormones released by the endocrine system affect cells?
They only affect cells that have receptors for that particular hormone
What is a common goal of the endocrine and nervous systems?
To maintain a stable internal environment
What is a key difference between the endocrine and nervous systems?
The type of signals transmitted
What is an example of coordination of activity in an animal?
The regulation of blood flow during hunting
What determines which cells respond to a particular hormone?
The presence of specific receptors on the surface of cells
Learn how animal tissues and organ systems work together to perform their specialized functions effectively. Discover the signals used to coordinate activity and how they move within the body.
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