30 Questions
What is the composition of nonsteroid hormones?
Amino acids
What happens when a nonsteroid hormone binds to a receptor on the plasma membrane?
An enzyme inside the membrane is activated
What is the purpose of negative feedback in the body?
To maintain homeostasis
What happens to blood calcium levels when parathyroid glands produce more hormone?
It increases
What is the role of the pituitary gland in the endocrine system?
To control other endocrine glands
What is the function of the endocrine system?
To secrete hormones
Which hormone is responsible for controlling blood clotting, nerve function, and muscle contraction?
Calcitonin
What is the main function of thyroxine in the body?
To increase the metabolic rate of body cells
What happens when the parathyroid glands sense low blood calcium levels?
They secrete more parathyroid hormone
What is the role of the pituitary gland in the body?
To control the release of hormones from other endocrine glands
What is the result of calcitonin signaling bones to absorb more calcium?
A decrease in blood calcium levels
Where is the pituitary gland located in the body?
At the base of the brain
What is the primary function of the endocrine system in the human body?
To maintain homeostasis
What is the classification of hormones based on their structure and function?
Steroid and nonsteroid (amino acid)
What is the mechanism of action of steroid hormones?
They diffuse through the plasma membrane and bind to receptors inside the cell
What is the role of the endocrine system in the fight or flight response?
It participates in the release of stress hormones
What is the term for the process by which hormones regulate bodily functions?
Hormonal feedback
What is the ultimate effect of steroid hormones on target cells?
They initiate protein synthesis
What is the primary function of insulin in the body?
To convert glucose into glycogen
What happens when blood glucose levels are low?
The pancreas secretes glucagon
What is the role of aldosterone in the body?
To aid in sodium reabsorption in the kidneys
What is the response of the adrenal glands to stress?
A sudden burst of energy
What is the effect of glucagon on the liver?
It breaks down glycogen into glucose
What is the function of cortisol in the body?
To raise blood glucose levels
What is the primary function of epinephrine and norepinephrine in the adrenal glands?
To increase heart rate, blood pressure, and breathing rate
What is the role of the hypothalamus in the body?
To produce antidiuretic hormone and oxytocin
What happens when the level of water in the blood drops too low?
The hypothalamus releases more antidiuretic hormone
What is the effect of antidiuretic hormone on the kidneys?
To increase the amount of water reabsorbed by the kidneys
What is the relationship between the hypothalamus and the endocrine system?
The hypothalamus serves as a link between the nervous and endocrine systems
What is the result of oxytocin production during childbirth?
Stimulation of uterine contractions during childbirth
Learn about the endocrine system and its role in the fight or flight response, as well as its function in maintaining homeostasis. Understand the glands that make up the endocrine system and how they regulate the body's systems.
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