Acetylcholine works:
Question 4 options:
A) by effecting in the nucleus of a cell and starting transcription
B) in neuromuscular junction
C) initiates the formation of steroids
D) is important in the action potential
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Question 5 (1 point)
In males FSH is responsible for:
Question 5 options:
A) stimulation of intersititual cells to make testosterone
B) sperm production in the seminiferous tubules
C) the male does not respond to FSH
D) none of the above
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Question 6 (1 point)
The posterior pituitary secretes:
Question 6 options:
A) oxytocin and antidiuretic hormone
B) thyroid-stimulating and adrenocorticotropic hormone
C) insulin and glucagons
D) growth hormone and prolactin
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Question 7 (1 point)
The gonadotropic hormones secreted by the anterior pituitary are:
Question 7 options:
A) TSH, ACTH, ADH
B) FSH, LH
C) ADH & prolactin
D) oxytocin & HGH
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Question 8 (1 point)
An example of a functional similarity between the nervous system and the endocrine system is:
Question 8 options:
A) both systems secrete hormones into the bloodstream
B) compounds used as hormones by the endocrine system may also function as neurotransmitters inside the CNS
C) they use the same cells
D) both produce very specific responses to environmental stimuli
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Question 9 (1 point)
Neurons communicate with one another and with effectors by:
Question 9 options:
A) releasing chemical neurotransmitters
B) receptor binding at the cell membrane
C) interacting with a hormone and a receptor complex
D) releasing chemicals into the bloodstream
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Question 10 (1 point)
The release of hormones by endocrine cells alters the:
Question 10 options:
A) the rate at which chemical neurotransmitters are released
B) metabolic activities of many tissues and organs simultaneously
C) the nervous system
D) function of muscles
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Question 11 (1 point)
The protein hormone prolactin is involved with the:
Question 11 options:
A) production of testosterone
B) production of milk
C) positive feedback and labor contractions
D) synthesis of growth hormone
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Question 12 (1 point)
The most notable effect of ADH produced in the posterior pituitary is to:
Question 12 options:
A) increase the amount of water lost at the kidneys
B) increase or decrease calcium ion as a second messenger
C) decrease the amount of water lost at the kidneys
D) lowers blood pressure
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Question 13 (1 point)
Peptide hormones affect target organ cells by:
Question 13 options:
A) binding to receptors in the cytoplasm
B) causing second messengers to be released when receptor binding occurs at the membrane surface
C) binding to target receptors in the nucleus
D) causing steroid production in the cell
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Question 14 (1 point)
Steroid hormones affect target organ cells by:
Question 14 options:
A) binding to receptors in the cytoplasm
B) causing second messengers to be released when receptor binding occurs at the membrane surface
C) binding to target receptors in the nucleus
D) causing steroid production in the cell
E) both a & c
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Question 15 (1 point)
Release of controlling hormones by the anterior pituitary is regulated by:
Question 15 options:
A) neural control from the hypothalamus
B) a negative feedback system
C) none of these
D) both of these
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Question 16 (1 point)
Homeostasis:
Question 16 options:
A) refers to maintaining a stable external environment.
B) refers to maintaining a stable internal environment.
C) refers to thermoregulation
D) use of an interneuron
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Question 17 (1 point)
Some nerves of the autonomic nervous system terminate at the pacemaker cells of the heart. These neurons secrete acetylcholine which decreases the heart rate. This is an example of:
Question 17 options:
A) endocrine control
B) exocrine control
C) neural control
D) hormonal control
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Question 18 (1 point)
The resting potential of the neuron membrane:
Question 18 options:
A) is the same in every cell
B) is in muscle and nerve cells
C) is such that the outside is positive with respect to the intracellular fluid
D) needs all the charged particles of the cell to be separated.
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Question 19 (1 point)
For the action potential to be reached,
Question 19 options:
A) the membrane must be out of the relative refractory period.
B) the Na+ entering the cell must exceed the K+ leaving the cell
C) the stimulus must reach or exceed the threshold.
D) all of the above
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Question 20 (1 point)
The ‘master gland’ of the endocrine system:
Question 20 options:
A) is the pineal gland
B) the pituitary gland
C) the hypothalamus
D) the pancreas
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Question 21 (1 point)
The lack of the following hormone results in dwarfism:
Question 21 options:
A) insulin
B) glucagons
C) adrenaline
D) growth hormone
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Question 22 (1 point)
Insulin and glucagon are produced in:
Question 22 options:
A) the pancreas
B) the thyroid
C) the pituitary
D) the kidneys
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Question 23 (1 point)
Epinephrine and norepinephrine are not only hormones, but they are also:
Question 23 options:
A) neurotransmitters in the central nervous system
B) neurotransmitters in the sympathetic nervous system
C) enzymes
D) all of the above
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Question 24 (1 point)
Which of the following is not true for cortisol?
Question 24 options:
A) cortisol is a glucocorticoid hormone
B) cortisol tends to elevate blood glucose levels
C) cortisol is made in the adrenal cortex
D) cortisol stimulates the fight – flight response.
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Question 25 (1 point)
Second messengers are triggered:
Question 25 options:
A) peptide hormones
B) anabolic steroids
C) steroid hormones
D) all of the above
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Question 26 (1 point)
The myelin sheath covers the axon and the dendrite to speed transmission of impulses
Question 26 options:
True
False
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Question 27 (1 point)
The CNS is composed of the brain and spinal cord only
Question 27 options:
True
False
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Question 28 (1 point)
Autonomic nerves are capable of directly controlling organs
Question 28 options:
True
False
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Question 29 (1 point)
Depolarization is the process of restoring resting potential
Question 29 options:
True
False
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Question 30 (1 point)
The all or none principal explains how the nerve can fire at different intensities
Question 30 options:
True
False
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Question 31 (1 point)
Cocaine stimulates the brain by releasing dopamine
Question 31 options:
True
False
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Question 32 (1 point)
The loop of Henle carries filtrate from the proximal tube to the distal tube
Question 32 options:
True
False
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Question 33 (1 point)
An interneuron is found within a reflex arc
Question 33 options:
True
False
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Question 34 (1 point)
The startle response is an example of a simple reflex
Question 34 options:
True
False
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Question 35 (1 point)
Antidepressants work on the CNS by affecting serotonin levels
Question 35 options:
True
False
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