cat dissection endocrine system
Within the bodies of all mammals, a complex network of glands (the endocrine system) is responsible for the production and secretion of special proteins and lipids (fats) called hormones. pituitary gland, (ANT PIT) controls menstrual cycle and production of eggs, (ANT PIT) regulates menstrual cycle and production of eggs, (ANT PIT) regulates levels of steroid hormone, cortisol, released by the adrenal cortex, (ANT PIT) growth and activity of thyroid gland, (ANT PIT) stimulates growth of muscles and long bones, (ANT PIT) breast development and maintains lactation (women) and stimulates testosterone (males), (POS PIT) stimulates uterine contractions and milk ejections, (POS PIT) causes the kidney tubules to reabsorb more water in order to reduce urine output, (PINEAL GLAND) exhibits a daily cycle (makes you sleepy), Thyroid Hormone (TH, Thyroxine T4, Triiodothyronine T3), (THYROID GLAND) has 2 active hormones that control the rate of body metabolism and cellular oxidation, (THYROID GLAND) decreases blood calcium levels by stimulation calcium salt deposit in the bones, (PARATHYROID GLAND) most important regulator of calcium in the blood, (THYMUS) development of T-lymphocytes and the immune response, (ADRENAL MEDULLA) fight or flight response triggered by stressors, (ADRENAL CORTEX) regulates water/electrolyte balance by regulating sodium reabsorption by kidney tubules, Glucocorticoids (cortisol, hydrocortisone, corticosterone), (ADRENAL CORTEX) enables the body to resist long-term stressors by increasing blood glucose levels, (ADRENAL CORTEX) "sex hormones" androgens for males and estrogen for females, (PANCREAS) DECREASES blood sugar levels by INCREASING glucose transport, (PANCREAS) RAISES blood glucose levels by stimulation the liver to BREAKDOWN glucose, (GONADS) development of secondary sex characteristics in females, menstrual cycles, and lactation, (GONADS) maintains uterine musculature and prepares the breasts for lactation, (GONADS) matures sex structures and responsible for sexual drive. (adsbygoogle = window.adsbygoogle || []).push({}). Both protein and steroid-type hormones are secreted directly into the bloodstream from the glands or organs that produce them, and circulate to their specific target cells or organs, where they exert their effect. Corticosteroids are a special group of steroids produced by the adrenal glands that are vital to many everyday functions within the body. A hormone is a chemical that is secreted by a gland in one area of the body and is carried by the bloodstream to other organs in the body, where it exerts some effect. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The adrenal glands produce a variety of hormones, each exerting unique effects within the body. Place your cat ventral surface up on the dissecting tray. “Steroid” is one of the most misused and widely misunderstood terms in today’s society. Without the endocrine glands and their hormones, a state of chaos would quickly ensue within the body, as the functional harmony existing between the various organ systems would cease to exist. 2 Cat Dissection Anterior (cephalad) Posterior (caudal) Superior (dorsal) Inferior (ventral) 3. Nervous system functions of the hypothalamus include regulation of body temperature, emotional behavior and sleep, and control of food and water intake. Certain organs can double as endocrine glands. Start studying Lab 2: Endocrine Glands & Cat Dissection. In turn, these hormones serve to regulate many vital functions within the body, from growth and development to digestion and utilization of nutrients. Too much parathyroid hormone can result in excess resorption of bony tissue, resulting in metabolic bone disease. The pituitary gland produces hormones that have effects on other endocrine glands, such as the thyroid and adrenal glands. This balance between the thyroid and parathyroid glands helps maintain proper blood levels of calcium at all time. In addition, pituitary hormones also influence growth and reproductive patterns. As a result, hormonal activities within the body are governed by complex negative feedback mechanisms, which ensure proper blood levels at all times. Insulin functions to lower blood sugar by increasing its uptake and utilization by the body organs. A cat’s endocrine system is composed of several different types of glands and organs that produce the hormones of the body. Synthetic derivatives of this steroid group are commonly used, among other things, to reduce pain and inflammation resulting from musculoskeletal injuries. 4. Females have a urogeni- chemical messengers released into the blood and transported thru the body, organs that respond to a specific hormone, blood vessels in brain that connect the hypothalmus to the ant. As an endocrine organ, the hypo- thalamus secretes the hormone ADH (antidiuretic hormone), which controls the water balance within the body; oxytocin, which stimulates lactation and uterine contractions; and a variety of other hormones that exert control over the pituitary gland. This is the group that has been largely exploited by athletes for increased muscular strength and size. Although all the different classes of steroids mentioned above, whether natural or synthetic, share a similar structural design, it is easy to see that their functions and effects differ greatly between each class. Learn vocabulary, terms, and more with flashcards, games, and other study tools.


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