BIO 255 Exam 5 Solution Manual Fully Solved Latest Update 2025
Unit 1C: Exocrine glands are made from [ Select ] ["connective", "nervous", "epithelial"] tissue and are
housed in connective tissue. They secrete their substances [ Select ] ["on epithelial surfaces via a duct",
"into the blood stream"] . - Answers epithelial, on the epithelial surface
Unit 1A: The workings of all organ systems are modified and maintained by signals from which two
systems? (choose two)
endocrine
muscular
nervous
cardiovascular
lymphatic - Answers endocrine, nervous
Unit 3B: The region of the brain that controls both the autonomic nervous system and the endocrine
system is called the:
Pituitary gland
Epithalamus
Thalamus
Hypothalamus - Answers Hypothalamus
Unit 2A: Calcitonin stimulates retention of calcium in bones. It does this by inhibiting the action of which
cells ?
Osteocytes
Osteoblasts
Lacunae
Osteoclasts - Answers Osteoclasts
Parathyroid hormone is unusual in that its release is stimulated by changing calcium levels in the blood.
Many other endocrine glands are stimulated by tropic hormones. What does this mean?
They are stimulated by releasing hormones of the hypothalamus
They are stimulated by inhibiting hormones of the hypothalamus
,They are stimulated by hormones released from the posterior pituitary gland
They are stimulated by hormones released from the anterior pituitary gland - Answers They are
stimulated by hormones released from the anterior pituitary gland
Which of the following hormones is NOT synthesized by cells in the pituitary gland?
Luteinizing hormone
Thyroid hormone
Adrenocorticotropic hormone
Growth hormone - Answers Thyroid hormone
The secretion of parathyroid hormone is stimulated by _.
a regulating hormone from the hypothalamus
low levels of calcium in the blood
a tropic hormone from the anterior pituitary gland
high levels of calcium in the blood - Answers low levels of calcium in the blood
How would secretions of norepinephrine by the adrenal medulla affect the sympathetic nervous
response?
It would prolong the response
It would make the response slower
It would make the response occur faster
It would shorten the response - Answers It would prolong the response
Following a large dinner, you will likely have high levels of _, which is produced by the __.
glucagon; alpha cells of pancreas
ghrelin; stomach
, insulin; beta cells of pancreas
cortisol; adrenal cortex
leptin; adipose cells - Answers insulin; beta cells of pancreas
leptin; adipose cells
With increasing age, thyroid hormone levels decline. What effect would this have on the body?
atrophy of muscles
increased bone demineralization
lower basal metabolic rates
disruption of circadian rhythm - Answers lower basal metabolic rates
With increasing age, growth hormone levels decline. What effect would this have on the body?
disruption of circadian rhythm
increased bone demineralization
lower basal metabolic rates
atrophy of muscles - Answers atrophy of muscles
With increasing age, melatonin levels decline. What effect would this have on the body?
lower basal metabolic rates
disruption of circadian rhythm
increased bone demineralization
atrophy of muscles - Answers disruption of circadian rhythm
Once food has been broken down physically and mechanically, its components are absorbed into the
bloodstream. Which hormone is then released to lower levels of carbohydrates in the bloodstream?
thyroid hormone
Unit 1C: Exocrine glands are made from [ Select ] ["connective", "nervous", "epithelial"] tissue and are
housed in connective tissue. They secrete their substances [ Select ] ["on epithelial surfaces via a duct",
"into the blood stream"] . - Answers epithelial, on the epithelial surface
Unit 1A: The workings of all organ systems are modified and maintained by signals from which two
systems? (choose two)
endocrine
muscular
nervous
cardiovascular
lymphatic - Answers endocrine, nervous
Unit 3B: The region of the brain that controls both the autonomic nervous system and the endocrine
system is called the:
Pituitary gland
Epithalamus
Thalamus
Hypothalamus - Answers Hypothalamus
Unit 2A: Calcitonin stimulates retention of calcium in bones. It does this by inhibiting the action of which
cells ?
Osteocytes
Osteoblasts
Lacunae
Osteoclasts - Answers Osteoclasts
Parathyroid hormone is unusual in that its release is stimulated by changing calcium levels in the blood.
Many other endocrine glands are stimulated by tropic hormones. What does this mean?
They are stimulated by releasing hormones of the hypothalamus
They are stimulated by inhibiting hormones of the hypothalamus
,They are stimulated by hormones released from the posterior pituitary gland
They are stimulated by hormones released from the anterior pituitary gland - Answers They are
stimulated by hormones released from the anterior pituitary gland
Which of the following hormones is NOT synthesized by cells in the pituitary gland?
Luteinizing hormone
Thyroid hormone
Adrenocorticotropic hormone
Growth hormone - Answers Thyroid hormone
The secretion of parathyroid hormone is stimulated by _.
a regulating hormone from the hypothalamus
low levels of calcium in the blood
a tropic hormone from the anterior pituitary gland
high levels of calcium in the blood - Answers low levels of calcium in the blood
How would secretions of norepinephrine by the adrenal medulla affect the sympathetic nervous
response?
It would prolong the response
It would make the response slower
It would make the response occur faster
It would shorten the response - Answers It would prolong the response
Following a large dinner, you will likely have high levels of _, which is produced by the __.
glucagon; alpha cells of pancreas
ghrelin; stomach
, insulin; beta cells of pancreas
cortisol; adrenal cortex
leptin; adipose cells - Answers insulin; beta cells of pancreas
leptin; adipose cells
With increasing age, thyroid hormone levels decline. What effect would this have on the body?
atrophy of muscles
increased bone demineralization
lower basal metabolic rates
disruption of circadian rhythm - Answers lower basal metabolic rates
With increasing age, growth hormone levels decline. What effect would this have on the body?
disruption of circadian rhythm
increased bone demineralization
lower basal metabolic rates
atrophy of muscles - Answers atrophy of muscles
With increasing age, melatonin levels decline. What effect would this have on the body?
lower basal metabolic rates
disruption of circadian rhythm
increased bone demineralization
atrophy of muscles - Answers disruption of circadian rhythm
Once food has been broken down physically and mechanically, its components are absorbed into the
bloodstream. Which hormone is then released to lower levels of carbohydrates in the bloodstream?
thyroid hormone
