5 Written questions
5 Matching questions
- Islets of Langerhans
- Pineal Gland
- Adrenal Gland
- a This gland is located near the base of the brain and it secretes melatonin.
- b Specialized cells in the pancreas that act as an endocrine gland. They secrete two amino acid-based hormones that regulate the level of sugar in the blood. The hormones are insulin and glucagon.
- c Modified fatty acids that are secreted by most cells. They accumulate in areas where tissues are disturbed or injured. Some reduce blood pressure, and others raise blood pressure. Some cause smooth muscles to contract while still others cause smooth muscles to relax. Some even cause fever. Aspirin and acetaminophen reduce fever and decrease pain by inhibiting prostaglandin synthesis.
- d A group of sex hormones secreted by the testes.
- e One of these is located over each kidney and each has an inner core, the medulla and the outer layer, the cortex. The medulla and cortex function as separate endocrine glands. Secretion of hormones in the medulla is controlled by the nervous system while hormones in the anterior pituitary regulate secretion of hormones in the cortex. The cortex responds specifically to adrenocorticotropic hormone (ACTH), which is secreted by the anterior pituitary gland.
5 Multiple choice questions
- Excessive insulin causes this, a disorder that causes glucose to be stored rather than used and properly delivered to body cells. This leads to lowered blood glucose concentrations and subsequent release of glucagon and epinephrine. Symptoms include lethargy, dizziness, nervousness, overactivity, and in extreme cases, unconsciousness and death.
- Many hormones work together in pairs to regulate the level of critical substances. These hormones have opposite effects.
- This is an amino acid-based hormone that is secreted by the thymus gland. The hormone stimulates the maturation of T cells, which help defend the body from pathogens.
- Specific cells that hormones travel to, to produce a specific effect.
- The adolescent stage during which the sex organs mature and secondary sex characteristics, such as facial hair appear. In males, during this stage, sperm production begins, the voice deepens, the chest broadens, and hair begins to grow on the body and face. In females, the menstrual cycle begins, the breasts grow, and the hips wide.
5 True/False questions
Endocrine Glands → Secrete substances through ducts (basically tubes). These substances can be water, enzymes, and mucus.
Endocrine System → Ductless organs that secrete hormones either into the bloodstream or into the extra-cellular fluid or liquid around the cell.
Parathyroid Glands → There are four of these glands on the back of the thyroid gland and they secrete parathyroid hormone. This stimulates the transfer of calcium ions from the bones to the blood. It has the opposite effect of calcitonin. A proper balance of calcium ions is necessary for cell division, muscle contraction, blood clotting, and neural signaling.
Luteinizing Hormone (LH) → A hormone secreted by the anterior pituitary stimulates secretion of sex hormones from the gonads. It stimulates the secretion of estrogen and progesterone in females. In males it stimulates the testes to secrete a group of sex hormones called androgens. An example of an androgen is testosterone.
Testosterone → A hormone secreted by digestive cells that stimulates other stomach cells to release digestive enzymes such as hydrochloric acid.