Biology 12

Chapter 6 The Endocrine System • MHR 203

CHAPTER 6 REVIEW

Summary of Expectations

Briefly explain each of the following points.

• The endocrine glands produce hormones that
  influence the activity of every organ and tissue
  in the body. (6.1)


• Endocrine hormones are secreted directly into
  the bloodstream, whereas exocrine hormones
  are secreted through ducts or tubes. (6.1)


• Steroid hormones are fat-soluble and can
  pass through the membranes of target cells;
  non-steroid hormones are not fat-soluble, so
  they bind to receptors on the surface of target
  cells. (6.1)


• The nervous system produces bioelectrical
  signals that travel along specialized nerve
  cells, while the endocrine system releases
  hormones into the bloodstream. (6.1, 6.2)


• Abnormal endocrine function can upset a
  number of metabolic processes in the body.
  (6.1, 6.2)


• Hormones of the adrenal gland control the
  body’s response to stress in several ways. (6.2)


• Testosterone is one of the sex hormones
  produced by an adult male. Estrogen and
  progesterone are hormones produced by an
  adult female. These hormones have a variety
  of effects in the male and female reproductive
  systems. (6.3)


• In the male, sperm release the hormone
  inhibin, which forms a negative feedback loop
  with FSH. In the female, estrogen inhibits the
  levels of FSH, forming a negative feedback
  loop. (6.3)

Language of Biology

Write a sentence using each of the following words or

terms. Use any six terms in a concept map to show

your understanding of how they are related.

• endocrine system • adrenal medulla


• hormones • puberty


• endocrine glands • seminiferous tubules


• exocrine glands • interstitial cells


• antagonistic hormones • spermatogenesis


• steroid hormones • meiosis


• non-steroid hormones • Sertoli cells


• human growth hormone • epididymis


• growth factors • seminal vesicles


• pituitary dwarfism • prostate gland


• gigantism • Cowper’s gland


• acromegaly • semen


• prolactin • inhibin


• anti-diuretic hormone • testosterone


• oxytocin • endometrium


• thyroid gland • ovaries


• hyperthyroidism • fallopian tubes


• Grave’s disease • fimbriae


• hypothyroidism • menstrual cycle


• calcitonin • follicles


• parathyroid hormone • follicular stage


• pancreas • ovulation


• circadian rhythms • corpus luteum


• pineal gland • progesterone


• thymus gland • luteal stage


• thymosin • menstruation


• adrenal gland • menopause


• adrenal cortex • hormone replacement


• adrenocorticotropic therapy
  hormone (ACTH)

1.Describe the relationship between the
endocrine system and each of the following.
(a)nervous system
(b)immune system
(c)reproductive system

2.Using the list below, make a chart with at least
three pairs of antagonistic hormones. Describe
the nature of their antagonistic functions.
(a)insulin
(b)thyroxine
(c)calcitonin
(d)glucagon
(e)testosterone
(f )aldosterone

(g)PTH

(h)cortisol

(i)estrogen

3.Some disease conditions are due to abnormal

endocrine function. Name the glands and

hormones associated with each of the following

conditions. Describe the symptoms associated

with each problem.

(a)acromegaly

(b)SAD

(c)diabetes

(d)hypothyroidism

(e)goiter

(f )gigantism

UNDERSTANDING CONCEPTS