How many of the following factors can decrease the heart rate ?
(A) Injection of acetyl choline
(B) Increased body temperature
(C) Release of adrenal medullary hormones
(D) Release of thyroxine hormone

In which the following can increase the rate of heart beat ? ltbr. (A) Sympathetic neaural signals. (B) Parasympathetic neural signals (C ) Adrenal medullary hormones. (9 ) Vagus nerve (E ) Thyroxine hormone (F) Acetylcholine

Which of the following factors will increase the solubility of NH_(3) gas in H_(2)O ? a. Increase in pressure b. Addition of water c. Increase in temperature Decrease in pressure

Assertion : Neural signals through the sympathetic nerves can increase the rate of heart beat, the strength fo ventriculrar contraction and thereby the cardiac output. Reason : Adrenal medullary hormones can increase the cardiac output.

Which of the following factor(s) is (are) responsible for the change of state of solid carbon dioxide into vapours ? (a) Increase in pressure (b) Decrease in pressure (c ) Increase in temperature (d) Decrease in temperature.

Presence of which of the following hormones can increase the strength of ventricular contraction, a. Epinephrine, b. Acetylcholine, c. Nor adrenaline, d. Catecholamines

How many of the following hormones are synthesised by the hypothalamus ? (I) growth hormone releasing hormone (II) prolactin inhibitory hormone (III) Thyroid stimulating hormone (IV) aldosterone (V) luteinizing hormone (VI) follicle stimulating hormone

Read the following statements A. Zone reticulate form the inner layer of adrenal cortex . B. Insulin is a peptide hormone secreted by beta cells of pancreas in pancreatic juice . C. Parathormone and thyroxine are antagonistic hormone . How many statements are incorrect ?

. How many of the following statements are correct ? (a) Nerve fibre do not innervate all cells of body but cellular function needs to be continuousely regulated. (b) Hormones are non-nutrient chemical which are secreted by glands which has ducts (c) Releasing & inhibitory hormones are secreted by nuclei present in hypothalamus. (d) All the hormone originating in the hypothalamic neurons, pass through axon and released from their nerve endings.

How many of the following features are applicable to the hormones ? i. The non-nutrient chemicals ii. Intracellular messengers iii. Released in blood or open spaces iv. Produced in trace amounts