Cell division may happen by either mitosis or meiosis, depending on what type of cell is invovled. Mitosis is a process by which a cell divides to form two daughter cells. They each have the same exact number and kind of chromosomes as the parent cell. Meiosis occurs in the primary sex cells leading to the formation of viable egg and sperm cells. They reduce the number of chromosomes to half in each gamete so that when they are getting furtilized, the species chromosome number is kept even.
Homeostasis is continually being disrupted due to the external environment, whether it be the weather causing the body to overheat/sweat or a blood glucose level dropping due to missing a meal. Luckily, there are body systems that work together to bring the internal environment back to the right balance. The nervous system and the endocrine system are linked with the hypothalamus, which is situated in the centre of the brain it provides the needed corrective measures to ensure the body is back to the right balance. When homeostasis is maintained, we know that the body is healthy.
Mitosis: This is the process by which a cell duplicates the chromosomes in its cell nucleus in order to generate two identical daughter nuclei.
The Endocrine System is made up of the pituitary gland, thyroid, parathyroid, pancreas, thymus, ovaries, testes, adrenal glands, and the hypothalamus. These glands secrete hormones that help maintain homeostasis in the body. The endocrine system releases hormones that promote growth, development, reproduction, and metabolism.
The hypothalamus is a small, vital section of the brain located just below the thalamus; it is in charge of numerous important bodily functions. The hypothalamus is shaped like a cone and ends in the pituitary stalk, a part of the pituitary gland. It forms the major portion of the ventral region of diencephalons, and oversees autonomic and metabolic processes. The hypothalamus is the connection between the nervous system and the endocrine system, creating this link by producing and secreting neurohormones that in turn stimulate the anterior pituitary gland to secrete hormones. The hypothalamus is central in the regulation of body temperature, hunger, thirst, and in the management of emotions and sexual activity.
A: The hypothalamus controls hormone release mainly through the pituitary gland by sending signals in the form of releasing hormones to prompt the anterior lobe to secrete them as the main function of the pituitary gland is hormone secretion into the body. The anterior lobe is responsible for the release of crucial hormones including; growth hormone, follicle stimulating hormone, luteinizing hormone, adrenocorticotrophic hormone, thyroid stimulating hormone and finally prolactin.
The Endocrine system is in charge of making sure your body works the way it should. It works by sending chemical messages through your body to make sure it works efficiently. The Endocrine system affects pretty much every cell and organ in your body. This system includes every single gland in your body that makes hormones. These glands include the pituitary gland, parathyroid glands, adrenal glands, thyroid gland, Pancreas, ovaries in females and testicles in males. These collection of glands produce and secrete (release) hormones directly into the blood stream. These hormones target specific cells in an organ, this is to control metabolism, growth and development, tissue function, sexual function, reproduction, sleep and mood. This is to help the body work the way it is suppose to. Homeostasis is the process of maintaining a constant internal environment including temperature, water content, available energy, oxygen and the concentration of wastes ensures that the body
Rathus (2012) further stated that the thalamus is involved in relaying information between the brainstem and the cortex. The thalamus also helps with attention, perception, timing, and movement. The hypothalamus is involved in the autonomic functions like sexual activity, body temperature, thirst, and hunger. It is also responsible for regulating the circadian rhythms, blood pressure and heart rate. Thirdly, the hypothalamus is associated with the production of the vital hormones in the body. It helps to regulate functions such as sleep, mood, sex drive, temperature and the releasing of other hormones. The midbrain is made of the tectum and tegmentum. The midbrain is responsible for motor movement, movement of the eye, auditory, and visual
The hypothalamus secretes chemicals called releasing hormones and inhibiting hormones that either stimulate or inhibit the secretion of a specific anterior pituitary hormone by the adenohypophysis. Through negative feedback, the hypothalamus adjusts the secretions of the anterior
The function of the Pituitary gland is to produce critical hormones that are chemical substances that condor various bodily functions. It is situated at the base of the mind underneath the hypothalamus, with a pea-sized structure. The hypothalamus is the main center for control of the internal environment. It lies deep inside the forebrain and connects, structurally, and functionally with the pituitary gland. It also signals the pituitary by way of neurosecretory neurons, specialized neurons that release hormones into the blood. Some portion of the endocrine framework. It is joined to by means of nerve strands. The pituitary is divided into three segments.
The thyroid regulates your metabolism, your appetite, muscle function, blood pressure, heart rate, among other things. And a way that it interacts with the pituitary is a good example of a negative feedback loop, a method of communication that's common all over the body and especially in the endocrine system. Basically, the pituitary is like the thyroid's thermostat. It can read how much thyroid hormone is in your blood stream and when its levels are low, it spits out a tiny bit of thyroid stimulating hormone, or TSH, which travels to the thyroid. The thyroid, in turn, secretes thyroid hormone, which boosts our metabolism, and that increase in metabolism tells the pituitary to stop sending out TSH. So the effect of the pituitary secretion is
Starting in the head and neck area one will find the hypothalamus, pineal gland, parathyroid glands, pituitary gland, and thyroid gland. Some of the functions of the hypothalamus, which is part of the brain, are to regulate body temperature, thirst, sleep, mood, hunger, and the release of other hormones in the body. The function pineal gland is to control circadian and circannual rhythms, and the release of melatonin. The function of the parathyroid glands is to mainly to control calcium levels in the body. The functions of the pituitary gland secrete various hormones for various functions. The function of the thyroid gland is to increase the metabolic rate to speed digestion. Now that the endocrine glands of the head and neck area have been introduced, now the glands of the upper and lower torso will be introduced and overviewed. The endocrine gland located in the upper torso is the thymus gland, in the lower torso the adrenal glands, pancreas, and testis/ovaries can be found. The function of the thymus gland is to stimulate the production and maturation of T Lymphocytes. The functions of the adrenal glands are the raising of glucose levels, the reabsorption of sodium and the excretion of potassium, and the stimulating of reproductive organs that bring about sex characteristics. The function of pancreas is to regulate blood glucose levels. And finally the function of the testis/ovaries is to stimulate sex characteristics. All of these glands make up the Endocrine System.