WorksheetsHomeostasis
Total questions: 35
Worksheet time: 21mins
1. The term used to describe the ability of a living organism to adjust to changing environmental conditions by regulating their internal processes:
Feedback
Homeostasis
Inhibition
Metabolism
Regulation
According to the test results in the table, which items are completely reabsorbed into the plasma?
I, II, V
I, III, IV
II, IV, V
III, IV, VI
III, V, VI
The nitrogenous waste that is found in urea comes from:
The atmosphere
The nitric buffer system
The breakdown of nucleic acids
The deamination of proteins
The metabolic breakdown of carbohydrates
What part of the nephron is impermeable to water (in the presence of ADH)?
Proximal Tubule
Descending Loop of Henle
Ascending Loop of Henle
Distal Tubule
Collecting Duct
What is located in the hypothalamus to detect changes in the osmotic pressure in the blood?
Alpha Islets of Langerhans cells
Beta Islets of Langerhans cells
Osmoreceptors
Neurotransmitters
Dopamine
Hormones are distributed throughout the body by the:
Circulatory System
Digestive System
Exocrine system
Lymphatic System
During the female reproductive cycle, Luteinizing Hormone peaks when which of the following occurs?
Fertilization
Implantation
Menstruation
Ovulation
Pregnancy
Metabolic homeostasis concerns the thyroid gland. The thyroid gland is regulated by feedback loops involving which of the following?
a T3 & TRH
b T4 & TSH
c TSH, T3 & T4
d TRH & T4
a and b
A doctor has a patient who is hypoglycemic. The most likely cause is low activity in which of the following?
Alpha cells in Islets
Beta cells in Islets
Pancreas
Posterior Pituitary Gland
Thyroid
Which of the following endocrine glands is an extension of the nervous system?
Anterior pituitary
Pancreas
Parathyroid
Posterior pituitary
Thyroid
Which of the following is a part of the circulatory system?
Bowman’s Capsule
Collecting Duct
Distal tubule
Glomerulus
Nephron
What is the name of the condition that occurs when the human body temperature drops below 35 degrees Celcius?
Hypothermia
Hyperthermia
Fever
Hypoglycemia
Hyperglycemia
Given the steps shown in the picture, which is the correct sequence for transmission at a chemical synapse?
i, ii, v, iv, iii
i, iii, iv, v, ii
ii, i, v, iii, iv
ii, I, v, iv, iii
v, iii, ii, iv, i
Interneurons are most commonly associated with which of the following?
Parasympathetic nervous system
Peripheral nervous system
Central nervous system
Sensory neurons
Sympathetic nervous system
Which part of a neuron receives sensory information?
Axon
Axon terminal
Dendrite
Myelin sheath
Node of Ranvier
Which of the following is not an effector?
Brain
Gland
Muscles
Organs
When is the neuron at rest?
It is not responding to a stimulus
The extracellular fluid has more sodium ions than the intracellular fluid
The intracellular fluid has a relative negative charge
There is a voltage difference across the membrane
All of the above are true
The sequence of a simple reaction to a stimulus is:
Effector, motor neuron, interneuron, sensory neuron, sense organ
Effector, sensory neuron, interneuron, motor neuron, sense organ
Sense organ, sensory neuron, interneuron, motor neuron, effector
Sense organ, sensory neuron, motor neuron, interneuron, effector
Sense organ, motor neuron, interneuron, sensory neuron, effector
Activation of the sympathetic nervous system:
Allows the body to relax rather than to prepare for fight or flight
Causes the pupil of the eye to dilate
Increases the flow of saliva
Slows heartbeat
Stimulates peristaltic contractions in the intestines
Which of the following best describes the movement of water molecules when there is high osmotic pressure in osmoreceptors?
Water moves out of the cell
There is no net movement of water
Water moves into the cell
The net movement of water is into the cell
The net movement of water is out of the cell
Which of the following best describes what takes place when the hypothalmus identifies that there is high osmotic pressure in osmoreceptors?
The anterior pituitary releases ADH
The anterior pituitary stops releasing ADH
The posterior pituitary releases ADH
The posterior pituitary stops releasing ADH
If the calcium in your blood decreases below homeostasis levels, the ___________ sense the decrease and send ____________ to your bones, so your bones will release calcium into the blood, bringing blood calcium levels back up.
hypothalmus, calcitonin
hypothalmus, parathyroid hormone
parathyroid glands, calcitonin
parathyroid glands, parathyroid hormone
What initiates and carries the action potential in a nerve?
An outflow of sodium ions across the neural membrane
An inflow of Na+ across the neural membrane
An inflow of K+ across the neural membrane
The myelin sheath
The nodes of Ranvier
To an isolated neuron, two stimuli, the first of one millivolt and the second of ten millivolts, were applied in quick succession. Action potentials of the neuron were recorded. Which of the below graphs has the correct pattern?
I
II
III
IV
V
Which graph(s) represents someone who is diabetic, just had a meal, but has not taken any hormone supplements?
I
II
III
IV
V
At what points is the neuron not using energy? (select all that apply)
a
c
d
e
f
The group of chemicals that are released during a synapse.
ions
neuron signalers
electrical stimulants
neurotransmitters
Type of hormone that must enter target cell and bind to a receptor inside the cell to cause changes.
steroid hormone
protein hormone
neurotransmitter
opioids
Arya Stark has had a traumatic blow to the head that affects her balance but not her skeletal muscle coordination. Which part of the brain was affected?
Occipital lobe
Temporal lobe
Frontal lobe
Parietal lobe
Cerebellum
The fatty protein material that covers the axon of many neurons.
Node of Ranvier
Myelin sheath
Schwaan cells
Dendrites
Blood vessel that supplies the kidneys with blood.
afferent vein
efferent vein
capillary
afferent arteriole
efferent arteriole
Cocaine blocks the reuptake of dopamine by binding competitively with the dopamine reuptake transporter - how does it affect this system?
less dopamine enters the synapse, so the postsynaptic neuron is less stimulated
less dopamine enters the synapse, so the postsynaptic neuron is more stimulated
more dopamine enters the synapse, so the postsynaptic neuron is less stimulated
more dopamine enters the synapse, so the postsynaptic neuron is more stimulated
According to the test results in the table, which items are excreted?
I, II, V
I, III, IV
II, IV, V
III, IV, VI
III, V, VI
