10 Which of the following is NOT true regarding homeostasis? O A Homeostasis is maintained through the stagnation of negative and positive feedback loops O B Homeostasis is the interaction of all feedback systems OCHeart rate, blood pressure, blood sugar levels, and hormone levels are all maintained through homeostasis O D Homeostasis is about the ways in which the body maintains its biological equilibrium
Show transcribed image text10 Which of the following is NOT true regarding homeostasis? O A Homeostasis is maintained through the stagnation of negative and positive feedback loops O B Homeostasis is the interaction of all feedback systems OCHeart rate, blood pressure, blood sugar levels, and hormone levels are all maintained through homeostasis O D Homeostasis is about the ways in which the body maintains its biological equilibrium
Which of the following statements is TRUE regarding sea anemones?
None of the answer options is correct.
Spongesânot sea anemonesâpossess what is considered to be the âsimplestâ nervous system found in animals.
Because sea anemones are âsimpleâ organisms, these animals only possess motor neurons; sensory neurons or interneurons are never found in sea anemones.
Although sea anemones possess ânet-likeâ nervous systems, these animals have brains located at their bases (near where they would attach to rocks).
Although sea anemones lack definitive brains, they do possess ganglia that serve a similar function to the paired ganglia of flatworms.
2.
Some people have low levels of calcium circulating in the blood, a condition known as hypocalcemia. While for many this disorder has little to no effect, for some it can be life-threatening. How could low levels of calcium harm an individual?
Low levels of calcium would not have any effect on synaptic transmission.
Low levels of calcium would cause sustained depolarization of the presynaptic cell.
Low levels of calcium would result in fewer signals sent between the pre- and postsynaptic cell.
3.
Cephalization is: the
All of these choices are correct.
development of a brain within the head of an animal.
concentration of sensory organs within the head end of an animal.
development of a âhead endâ in an organism.
4.
Which of the following are TRUE about the resting membrane potential? (Select all that apply.)
It results from voltage-gated sodium channels remaining open for long periods of time.
It results from K+ ions diffusing out of the cell.
It results from the sodium-potassium pump moving more Na+ ions out of the cell than K+ ions into the cell.
5.
Afferent and efferent neurons differ in:
their size.
the directionality of the information they send.
their pattern of myelination.
6.
A neuron that responds to the environment is a(n):
interneuron.
homeostatic neuron.
motor neuron.
sensory neuron.
7.
Which of the following is NOT the role of an interneuron?
stimulating a muscle to contract
conveying information from the internal environment of an animal
relaying information from sensory to motor neurons
maintaining homeostasis
8.
Where are postsynaptic cell receptor proteins synthesized?
the Golgi apparatus
the lysosome
the cytoplasm
the rough endoplasmic reticulum
9.
Inhibition of the flexor muscle during the knee-extension reflex is an example of:
homeostasis.
reciprocal inhibition.
negative feedback.
All of these choices are correct.
10.
What type of cells produce myelin for sensory neurons?
7. The menstrual occurs within 3 or 4 days of which of thefollowing changes in the blood?
increase in estrogen and decrease in progesterone
increase in progesterone and decrease in estrogen
increase in progesterone and estrogen
decrease in progesterone and estrogen
8. Which statement regarding sperm production and aging istrue?
Aging increases the amount of sperm produced
Aging has a variable effect on the amount of spermproduced.
Aging causes major changes in sperm cell morphology
Aging causes major changes in sperm cell function
9. Which of the following is a function of the digestivesystem?
Helping with speech
Vitamin A production
Storing blood in the pancreas
Producing erythropoietin
10. Thinning of the enamel, decrease in nerve cells, recedinggums and loss of muscle of mastication coordination are consideredto be what type of changes in the mouth?
Abnormal changes
Age changes
11. A decline in sexual activity with age is primarilyassociated with what age related changes in the physiology of amale?
Decline in frequency of use
Deteriorating self-image
Medication use
Changes in blood flow
12. Which of the following conditions is not apathological change that effects the stomach?
Peptic ulcer
Atrophic Gastritis
Acute Gastritis
Stricture
13. Which of the following is an age related cause for fecalincontinence?
Laxative use
Ulcerative colitis
Colorectal cancer
Disability
Stool softener
14. A decrease in lactase secretion is an age related changeassociated with the _____________.
stomach
small intestine
large intestine
pancreas
15. Which of the following statements regarding atrophicgastritis is true?
causes overproduction of HCL
causes overproduction of intrinsic factor
increase absorption of B12
increase risk for cancer
16. Functional incontinence may be due to a problem withwhat?
cognitive function
autonomic system
urinary bladder
urethra
17. Which of the following is not a function of nutrients?
energy for activities
raw materials for growth
buffer to maintain pH
fluid and electrolyte balance
18. Adenosine triphosphate is produced during all of thefollowing processes, except ______.
Oxidative phosphorylation
Kreb's cycle
Electron transport
Glycation
19. The digestive system helps create nutritional homeostasis,which of the following is one of the four reasons for nutritionalhomeostasis?
nutrients are formed to supply the energy for vitalfunctions
nutrients supply raw materials to synthesize body substances
nutrients counteract against blood so that volume ismaintained
nutrients tear down worn out substances for later use
20. Women with _____ percent body fat has an increase risk for ashorter life span and weight related diseases.
18
22
27
31
21. What amount of protein should be consumed daily by an olderadult?
.25 gram per kilogram of weight
.5 gram per kilogram of weight
.75 gram per kilogram of weight
1 gram per kilogram of weight
22. Stress incontinence is much more common in women than in menbecause women have which of the following?
longer urethra
premenopausal thinning
weakened structures
23. Which of the following is an age related change affectingthe kidneys?
increase in weight
increase in width
decrease in area
decrease in volume
24. Postmenopausal decrease in estrogen leads to age relatedchanges of the _________.
Urethra
Urinary bladder
Ureter
Kidney
25. _______ percent of the working capacity of both kidneys isneeded to maintain homeostasis.
10
20
30
40
26. Which of the following is considered a treatment for urinaryincontinence?
surgical removal of the sphincter
medications to modify bladder function
electric shock therapy
27. Which reproductive hormone provides a decrease risk ofatherosclerosis?
testosterone
relaxin
estrogen
follicle stimulating hormone
28. Which form of cancer in the female reproductive system rankssecond in occurrence?
Ovarian
Cervical
Endometrial
Vaginal
29. Which hormone produced in females seems to stimulate thelibido?
Estrogen
Progesterone
Testosterone
Luteinizing hormone
30. Which of the following regarding prostate cancer istrue?
it is related to having benign prostatic hypertrophy
it is more common in white males
testing for prostatic specific antigen is sensitive andspecific