BIOS 252: WRITTEN EXAM
BIOS 252: WRITTEN EXAM REVIEW QUESTIONS AND ANSWERS
GRADED A+ LATEST UPDATE.
Discriminate between paracrine, autocrine, endocrine, and exocrine? ANS >> -
Paracrine glands: relating to a hormone or to a secretion released by (endocrine)
cells into the adjacent cells or surrounding tissue rather than into the
bloodstream.
- Autocrine hormones act on the same cells that produce them
- Endocrine glands secrete hormones into the bloodstream (pituitary, pineal,
thyroid)
- Exocrine glands secrete substances through a duct or opening to a body surface
(Sweat, salivary, mammary)
Choose 1 endocrine gland and describe the hormones it secretes; including the
functions of each hormone and how the endocrine gland is regulated. ANS >>
Thyroid gland:
- Secretes: Triiodothyronine (T3), Thyroxine (T4), and calcitonin
- Functions: regulate the speed with which the cells/metabolism work (heart rate),
calcitonin regulates levels of calcium and phosphate in the blood
- The thyroid gland is regulated by thyrotropin releasing hormone (TRH) and
thyroid stimulating hormone (TSH)
, BIOS 252: WRITTEN EXAM
Where are the receptor cells for hearing? ANS >> Cochlea
Area of the eye where vessels enter and leave? ANS >> Optic Nerve
Frontal Lobe ANS >> The lobe at the front of the brain associated with
movement, speech, and impulsive behaviour.
Temporal Lobe ANS >> A region of the cerebral cortex responsible for hearing
and language.
Parietal Lobe ANS >> A region of the cerebral cortex whose functions include
processing information about touch.
Occipital Lobe ANS >> A region of the cerebral cortex that processes visual
information
How do lens focus light onto the retina? ANS >> It changes shape (flat or semi-
circular)
Thyroid glands secrete ANS >> Triiodothyronine (T3), Thyroxine (T4), and
calcitonin
Adrenal glands secrete ANS >> Epinephrine, norepinephrine, cortisol, estrogen*,
aldosterone, and androgen*, glucocorticoids, and mineral corticoids
BIOS 252: WRITTEN EXAM REVIEW QUESTIONS AND ANSWERS
GRADED A+ LATEST UPDATE.
Discriminate between paracrine, autocrine, endocrine, and exocrine? ANS >> -
Paracrine glands: relating to a hormone or to a secretion released by (endocrine)
cells into the adjacent cells or surrounding tissue rather than into the
bloodstream.
- Autocrine hormones act on the same cells that produce them
- Endocrine glands secrete hormones into the bloodstream (pituitary, pineal,
thyroid)
- Exocrine glands secrete substances through a duct or opening to a body surface
(Sweat, salivary, mammary)
Choose 1 endocrine gland and describe the hormones it secretes; including the
functions of each hormone and how the endocrine gland is regulated. ANS >>
Thyroid gland:
- Secretes: Triiodothyronine (T3), Thyroxine (T4), and calcitonin
- Functions: regulate the speed with which the cells/metabolism work (heart rate),
calcitonin regulates levels of calcium and phosphate in the blood
- The thyroid gland is regulated by thyrotropin releasing hormone (TRH) and
thyroid stimulating hormone (TSH)
, BIOS 252: WRITTEN EXAM
Where are the receptor cells for hearing? ANS >> Cochlea
Area of the eye where vessels enter and leave? ANS >> Optic Nerve
Frontal Lobe ANS >> The lobe at the front of the brain associated with
movement, speech, and impulsive behaviour.
Temporal Lobe ANS >> A region of the cerebral cortex responsible for hearing
and language.
Parietal Lobe ANS >> A region of the cerebral cortex whose functions include
processing information about touch.
Occipital Lobe ANS >> A region of the cerebral cortex that processes visual
information
How do lens focus light onto the retina? ANS >> It changes shape (flat or semi-
circular)
Thyroid glands secrete ANS >> Triiodothyronine (T3), Thyroxine (T4), and
calcitonin
Adrenal glands secrete ANS >> Epinephrine, norepinephrine, cortisol, estrogen*,
aldosterone, and androgen*, glucocorticoids, and mineral corticoids
