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Worksheetskahoot 4. test
Total questions: 29
Worksheet time: 15mins
which of the following endocrine glands is adenohypophysis-dependent?
A. Parathyroid gland
A. Thyroid gland (follicular cells)
A. Adrenal medulla
A. Pancreas (endocrine part)
Secretion of GH (somatotropin) is regulated by:
A. Only releasing hormones
A. Both releasing and inhibiting hormones
A. Only inhibiting hormones
A. Neither, it is independent
A deficiency of thyroid hromones during growth in young animals can lead to:
A. hyperthyroidism
A. Addison’s disease
A. Cretinism
A. Hypoparathyroidism
Which food source is rich in iodine and helps prevent goiter?
A. Beef muscle
A. Seaweed (nori)
A. Corn
A. Weed
Which mechanism primarily regulates mineralocorticoid (aldosterone) secretion?
A. CRH from the hypothalamus
A. Renin-angiotensin system and plasma electrolyte levels
A. ACTH from the adenohypophysis
A. Cortisol negative feedback
What is the primary precursor for all corticosteroid synthesis?
A. Cholesterol
A. Glucose
A. Amino acids
A. Tyrosine
Which hormone is produced in the growing ovarian follicles and stimulates female secundary sex charactersitics?
A. Progesterone
A. Testosterone
A. Estrogen
A. Luteinizing hormone
Parathyroid hormone (PTH) primarily:
A. Decreases blood calcium levels
A. Inhibits osteoclast activty
A. Increases blood calcium levels
A. Stimulates calcitonin secretion
Epinephrine’s effects include all of the followin EXCEPT:
A. Stimulates glycogenolysis
A. Inhibits glucagon secretion
A. Enhances thermogenesis
A. Elevates heart rate
Which hormone is co-secreted with insulin and slows gastric emptying?
A. Glucagon
A. Somatostatin
A. Amylin
A. Pancreatic polypeptide
What triggers insulin release from β-cells?
A. Increased ATP --> K+ channel closure --> Ca2+ influx
A. Low blood glucose
A. Somatostatin inhibition
A. Glucagon secretion
During hypoglycemia, glucose uptake in the nervous tissue:
A. Requires insulin receptor activation
A. Stops completely until insulin is secreted
A. Continues via insulin-independent GLUT transporters
A. Is enhanced by amylin
In adipose tissue, insulin:
A. Activates lipolysis
A. Stimulates ketone body formation
A. Converts glucose into glycogen
A. Inhibits fat mobilization and promotes triglycerin storage
Which of the following is a unicellular exocrine gland?
A. Submandibular gland
A. Sebaceous gland
A. Goblet cell
A. Pancreas
Which exocrine secretion type involves the entire cell disintegrating to release its contents?
A. Holocrine
A. Apocrine
A. Merocrine
A. Endocrine
Which layer other the tear film reduces evaporation?
A. Mucous layer
A. Oil layer (meibomian glands)
A. Watery layer
A. Corneal epithelium
Oxytocin release for milk ejection is inhibited by:
A. Epinephrine
A. Prolactin
A. Parasympathetic stimulation
A. Estrogen
Which component in wool is greasy and produced by sebaceous glands?
A. Suint
A. Mucin
A. Lanolin
A. Cerumen
mammary gland growth is influenced by all the following except:
A. Estrogens
A. Growth hormone
A. Progesterone
A. glucagon
What is the primary purpose of colostrum for newborns?
A. To provide a source of carbohydrates for energy
A. To supply antibodies and nutrients essential for immune support
A. To serve as the first source of hydration
A. To promote rapid weight gain in the first week of life
The basic functional units of the mammary glands are alveoli?
A. True
A. False
which hormones are primarliy responsible for stimulating mammary gland development?
A. Testosterone and insulin
A. Epinephrine and norepinephrine
A. Estrogen and progesterone
A. Thyroid hormones and calcitonin
What is the term for the process of removing offspring from the mother and transitioning the newbron milk to solid food?
A. Abandonment
A. Weaning
A. Nesting
A. Fostering
Which hormone level rapidly decreases in the blood after giving birth?
A. Oxytocin
A. Prolactin
A. Progesterone
A. testosterone
During which time period after birth can the small intestine absorb immunoglobulins most effectively?
A. First 6 hours
A. First 24 hours
A. First 12 hours
A. First week
what happens to lactose concentration in milk throughout the lactation peroid?
A. It increases significantly over time
A. It fluctuates widely with each feeding
A. It remains relatively constant throughout lactation
A. It decreases as lactation processes
Species that grow faster have a higher content of proteins and minerals in their milk?
True
False
It takes 5-10 seconds from initial stimulation to milk ejection
A. False
A. True
In the context of milk production, what does the term “homeorhesis” refer to?
A. The stable composition of milk during lactation
A. The mechansism by which milk is ejected from the mammary glands
A. The ability of the body to adjust metabolic processes to support lactation
A. The genetic factors influencing milk yield in dairy cows
