ANSC 201 EXAM 3 PSU questions well
answered to pass
Growth - correct answer ✔✔an increase in body mass, getting bigger
measurements of growth - correct answer ✔✔1) Weight
2) Height
3) Length
4) Body Composition
Average Daily Gain (ADG) - correct answer ✔✔term used to express growth
ADG = (W2-W1)/(T2-T1) ~ (in days)
Hyperplasia - correct answer ✔✔increase in cell numbers (largely in early, prenatal stage)
Hypertrophy - correct answer ✔✔increase in cell size (largely after birth)
Atrophy - correct answer ✔✔decrease in cell size or wasting away of body part or tissue/cell
Tumors - correct answer ✔✔abnormal localized cell growth without normal control
mechanisms
Prenatal growth - correct answer ✔✔Three phases
- blastocyst: occurs after fertilization, nutrition from urine secretions and egg
- embryonic: cell differentiation into tissues and organs, very small increase in weight
,- fetal: major growth in weight and composition, nutrition is from maternal bloodstream
through placenta.
factors influencing growth - correct answer ✔✔- size of dam/sire (genetics)
- number of fetuses
- implantation site in uterus
- nutrition level of dam
- disease status of dam
Postnatal growth - correct answer ✔✔- growth curve = s shaped
a) self accelerating: initial exponential growth
b) self inhibiting: growth slows down because of restraints
genetic hormones come from - correct answer ✔✔pituitary gland
GENETIC HORMONES - correct answer ✔✔1) Permissive for growth
- thyroxin
- insulin
- adrenal corticoids
2) Growth of specific organs
- thyrotropin
- adrenocorticotropic hormone (ACTH)
- gonadotropins
3) Growth of whole body
- Growth Hormone: Somatotropin
, Thyroxin - correct answer ✔✔from the thyroids, sets metabolic rate
Insulin - correct answer ✔✔from pancreas, promotes cell division
Adrenal corticoids - correct answer ✔✔from adrenal glands on kidney
-mineral corticoids: regulate concentration of minerals, especially sodium and potassium
-glucocorticoids: help regulate carbohydrate conversions and metabolism
Thyrotropin (TSH) - correct answer ✔✔secreted by the anterior pituitary, targets thyroid and
promotes the release of thyroid hormones
Adrenocorticotropic hormone (ACTH) - correct answer ✔✔targets adrenal gland, stimulates
secretion from adrenal cortex
Follicle-stimulating hormone (FSH) - correct answer ✔✔targets gonads
luteinizing hormone (LH) - correct answer ✔✔targets gonads
Somatotropin - correct answer ✔✔from pituitary, increases cell growth, mitosis, and protein
production + stimulates bone growth (growth plate)
Factors that limit growth - correct answer ✔✔1) nutrition
2) diseases
3) parasites
Growth curve - correct answer ✔✔- different organs and tissue grow at different rates
- different organs and tissues grow at different times
answered to pass
Growth - correct answer ✔✔an increase in body mass, getting bigger
measurements of growth - correct answer ✔✔1) Weight
2) Height
3) Length
4) Body Composition
Average Daily Gain (ADG) - correct answer ✔✔term used to express growth
ADG = (W2-W1)/(T2-T1) ~ (in days)
Hyperplasia - correct answer ✔✔increase in cell numbers (largely in early, prenatal stage)
Hypertrophy - correct answer ✔✔increase in cell size (largely after birth)
Atrophy - correct answer ✔✔decrease in cell size or wasting away of body part or tissue/cell
Tumors - correct answer ✔✔abnormal localized cell growth without normal control
mechanisms
Prenatal growth - correct answer ✔✔Three phases
- blastocyst: occurs after fertilization, nutrition from urine secretions and egg
- embryonic: cell differentiation into tissues and organs, very small increase in weight
,- fetal: major growth in weight and composition, nutrition is from maternal bloodstream
through placenta.
factors influencing growth - correct answer ✔✔- size of dam/sire (genetics)
- number of fetuses
- implantation site in uterus
- nutrition level of dam
- disease status of dam
Postnatal growth - correct answer ✔✔- growth curve = s shaped
a) self accelerating: initial exponential growth
b) self inhibiting: growth slows down because of restraints
genetic hormones come from - correct answer ✔✔pituitary gland
GENETIC HORMONES - correct answer ✔✔1) Permissive for growth
- thyroxin
- insulin
- adrenal corticoids
2) Growth of specific organs
- thyrotropin
- adrenocorticotropic hormone (ACTH)
- gonadotropins
3) Growth of whole body
- Growth Hormone: Somatotropin
, Thyroxin - correct answer ✔✔from the thyroids, sets metabolic rate
Insulin - correct answer ✔✔from pancreas, promotes cell division
Adrenal corticoids - correct answer ✔✔from adrenal glands on kidney
-mineral corticoids: regulate concentration of minerals, especially sodium and potassium
-glucocorticoids: help regulate carbohydrate conversions and metabolism
Thyrotropin (TSH) - correct answer ✔✔secreted by the anterior pituitary, targets thyroid and
promotes the release of thyroid hormones
Adrenocorticotropic hormone (ACTH) - correct answer ✔✔targets adrenal gland, stimulates
secretion from adrenal cortex
Follicle-stimulating hormone (FSH) - correct answer ✔✔targets gonads
luteinizing hormone (LH) - correct answer ✔✔targets gonads
Somatotropin - correct answer ✔✔from pituitary, increases cell growth, mitosis, and protein
production + stimulates bone growth (growth plate)
Factors that limit growth - correct answer ✔✔1) nutrition
2) diseases
3) parasites
Growth curve - correct answer ✔✔- different organs and tissue grow at different rates
- different organs and tissues grow at different times
