Physio Lab 4 Quiz

Which of the following is INCORRECTLY matched with its secreting organ?
-TRH: hypothalamus
-Triiodothyronine: thyroid gland
-Thyroxine: thyroid gland
-TSH: posterior pituitary

TSH-Posterior pituitary

A decrease in the level of thyroxine would increase the secretion of __
-TRH
-TSH
-Neither TSH nor TRH
-Both TSH and TRH

Both TSH and TRH

A hypophysectomized rat is missing its __
-Adrenal gland
-Pituitary gland
-Thryoid gland
-Hypothalamus

Pituitary gland

Thyroxine is a __
-Slow-acting hormone that works through a second-messenger system
-Hormone that enters the nucleus
-Slow-acting hormone that enters the nucleus
-Slow-acting hormone
-Hormone that works through a second-messenger system

Slow-acting hormone that enters the nucleus

Which of the following hormones is regulated by a positive feedback mechanism?
-Thyroxine
-TRH
-TSH
-Oxytocin

Oxytocin

An abnormally high level of which of the following will result in goiter?
-TRH
-TSH
-Thyroxine
-Either TRH or TSH
-Either thyroxine or TRH

TSH

Why did the TSH have no effect on the BMR on the thyroidectomized rat?
-The metabolism of the rat is already too low
-The rat is missing its pituitary gland
-The metabolism of the rat is already to high
-The rat is missing its thyroid gland

The rat is missing its thyroid gland

The injection of TSH resulted in goiter in
-The thyroidectomized rat
-The normal rat
-The hypophysectomized rat
-The normal rat and the hypophysectomized rat

The normal rat and the hypophysectomized

Propylthiouracil injections resulted in goiter formation in
-The thyroidectomized rat
-The normal rat
-The hypophysectomized rat
-The normal rat and the hypophysectomized rat

The normal rat

Glucose is stored in the human body as
-Insulin
-Plant starch
-Glucagon
-Glycogen

Glycogen

Which hormone stimulates the breakdown of polymerized glucose?
-Insulin
-Glucagon
-Plant starch
-Glycogen

Glucagon

Glucose remains in the bloodstream as a result of
-Type 1 diabetes mellitus
-Type 2 diabetes mellitus
-Diabetes insipidus
-Type 1 and type 2 diabetes mellitus
-Type 1 diabetes mellitus and diabetes insipidus

Type 1 and type 2 diabetes mellitus

Excess glucose can be found in the urine
-When the transport maximum for reabsorption in the kidney tubules is exceeded
-When the transport maximum for reabsorption in the kidney tubules is exceeded, as a result of type 1 diabetes or as a result of type 2 diabetes
-As a result of type 1 diabetes
-As a result of type 2 diabetes

When the transport maximum for reabsorption in the kidney tubules is exceeded, as a result of type 1 diabetes or as a result of type 2 diabetes

Why does the color in the tubes vary?

The tubes contain different amounts of glucose

In this experiment, optical density is measured using a
-Spectrophotometer
-Thermocycler
-Microscope
-Caliper

Spectrophotometer

Using this assay, glucose concentration is
-Inversely proportional to the volume of blood sampled
-Inversely proportional to optical density
-Directly proportional to the volume of blood sampled
-Directly proportional to optical density

Directly proportional to optical density

Peptide hormones include which of the following?
-Follicle-stimulating hormone and estrogen
-Calcitonin
-Follicle-stimulating hormone
-Estrogen
-Follicle-stimulating hormone and calcitonin

Follicle-stimulating hormone and calcitonin

Which of the following is incorrectly matched with one of its functions?
-Calcitonin: inhibits osteoblast activity
-Estrogen: provides protection against osteoporosis
-FSH: stimulates ovarian follicle growth
-All of the above are matched correctly

Calcitonin- inhibits osteoblast activity

Which of the following is incorrectly matched with its primary secreting organ?
-FSH: ovaries
-Estrogen: ovaries
-Calcitonin: thyroid gland
-All of the above are matched correctly

FSH-ovaries

Inhibiting osteoclast activity would prevent
-Osteoporosis
-Osteopenia and Osteoporosis
-Ovariectomy
-Osteopenia

Osteopenia and Osteoporosis

Replacement therapies for which two hormones were tested in this experiment?
-FSH and estrogen
-Saline and estrogen
-FSH and calcitonin
-Saline and calcitonin
-Estrogen and calcitonin

Estrogen and calcitonin

Which of the following showed the greatest improvement in vertebral bone density for the rats?
-FSH
-Estrogen
-Saline
Calcitonin

Estrogen

The baseline T score for the rats was indicative of
-Osteopenia, because their anterior pituitary was removed
-Osteoporosis, because their anterior pituitary was removed
-Osteoporosis, because their ovaries were removed
-Osteoporosis, because they were postmenopausal
-Osteopenia, because their ovaries were removed

Osteoporosis, because their ovaries were removed

Which of the following improved the vertebral bone density of the rats?
-Saline
-Both calcitonin and estrogen
-FSH
-Calcitonin
-Estrogen

Both calcitonin and estrogen

The target cells for the hormone ACTH are located in the
-Posterior pituitary
-Adrenal cortex
-Anterior pituitary
-Hypothalamus

Adrenal cortex

Tropic hormones include which of the following?
-CRH
-ACTH
-Both ACTH and CRH
-Cortisol
-Cortisol, ACTH and CRH

Both ACTH and CRH

Which of the following is not characterized by high levels of cortisol in the blood?
-Iatrogenic Cushing’s syndrome
-Cushing’s syndrome
-Addison’s disease
-Cushing’s disease

Addison’s disease

Iatrogenic Cushing’s syndrome is
-Physician induced
-Often referred to as "steroid diabetes"
-A result of treatment with glucocorticoid hormones
-All of the above are correct

All of the above are correct

Normally high levels of cortisol would inhibit release of

ACTH and CRH

Which hormone stimulates the pituitary gland to release ACTH?

CRH

High levels of cortisol would normally provide negative feedback to to the
-The anterior pituitary and the hypothalamus
-Anterior pituitary
-The posterior pituitary and the hypothalamus
-Hypothalamus
-Posterior pituitary

The anterior pituitary and the hypothalamus