Hypothalamus Gains Admittance Essays

The central nervous system is composed of the brain and spinal cord and the peripheral nervous system is composed of the body’s sensory receptors, muscles, and glands. The peripheral nervous system is made up of somatic and automatic. Somatic is the voluntary movement of our skeletal muscles. When we hear the bell ring, our somatic nervous system carries the message to the brain and the brain reports back to our muscles. The autonomic nervous system controls our glands and muscles in our internal organs. Some things this nervous system does is taking control of our digestive system and our heart beat. There are two functions of the autonomic nervous system- the sympathetic and the parasympathetic nervous system. The sympathetic nervous system arouses and expands energy. If someone gets excited or nervous in a situation, their blood pressure will rise, their digestion will slow down, their heartbeat will accelerate, their blood sugar will rise, and they will sweat to cool down. The parasympathetic is the opposite. It tries to conserve energy by decreasing your heartbeat, lowering your blood sugar, and so

Diencephalon lies beneath the cerebrum in the brain stem region. The diencephalon consists of four main components; thalamus, subthalamus, hypothalamus, and the epithalamus. The thalamus is located on both sides of the brain under the cerebral. The thalamus also makes up most of the diencephalon mass. The primary function is to processes and sends the information it receives to the brain. Located below the thalamus is the hypothalamus and plays another crucial role in the body. The hypothalamus is responsible for our appetite, behavior, and some hormones (Saladin, p.524). Epithalamus is the location to the pineal gland which produces melatonin and helps with sleep cycles. Subthalamus is located between the thalamus and the hypothalamus and

It starts off with the hypothalamus gland, which is located near the center of the brain. It receives chemical and nervous signals regarding 4 of the 5 senses being sight, sound, taste and smell, as well as the body’s temperature, blood glucose levels, and the body’s balance of salt water. Furthermore, it also helps to control hunger and thirst, and takes part in the reproductive system. The hypothalamus also controls the pituitary gland.

Humans are endotherms and their physiological thermoregulatory responses are controlled by the hypothalamus in the brain. The hypothalamus receives information from both receptors in the hypothalamus that monitor core body temperature, and receptors in the skin which register external temperature. This information allows the hypothalamus to regulate body temperature.

There are five components of the homeostatic control system: the stimulus, the receptor, the control centre and the effector. The stimulus of this homeostatic control system is the change in temperature, either the increase or decrease of the body’s normal core internal temperature of 37 C. The thermoreceptors in the hypothalamus detects the blood’s temperature which is the body’s core temperature; and the thermoreceptors in the skin detects external temperature of the body. The thermoreceptors then send nerve impulses to the control centre, the hypothalamus (a section in the brain), indicating the change in temperature. The hypothalamus is the thermoregulatory control centre. The hypothalamus then responds to the core temperature change and the nerve impulses from the thermoreceptors in the skin, and directs the effector organs (the arterioles, sweat glands, adrenal gland and the thyroid gland) to initiate reactions to either decrease or increase the body’s temperature, opposite of the original change in temperature to its normal set point.

The control of body temperature –thermoregulation. This is an example of the nervous and endocrine systems working together.

The hypothalamus' primary function is homeostasis, which is to maintain the body's status quo system-wide. The hypothalamus does many things, but two of its most important jobs are to maintain homeostasis and to control certain hormones. Homeostasis is very important to all animals, including humans. If we look at the word, we see that homeo means “the same”, and stasis means “not moving”, or “holding”.

The Hypothalamus controls our stress responses. When a stress response is triggered it sends signals to either the adrenal medulla or the anterior pituitary gland. The short term responses produce the fight or flight response via the Sympathetic Adrenal Medullary System (SAM) considered the first shock response. The Hypothalamus will deal with the onset of a sudden or severe stress by stimulate the Adrenal Medulla to release adrenaline and noradrenaline. This will generally increase the heart rate, slows digestive activity, dilation of pupils, dry mouth and glucose is released

The pituitary gland is located at the base of the brain, just below the hypothalamus. Being just the size of pea, the pituitary gland has huge role in the brain. It has three sections know as the anterior, intermediate, and the posterior lobes. To begin, the anterior lobe is primarily involved with the development of the body, maturation, and reproduction. The hormones produced by the anterior lobe adjust growth, stimulates adrenal and thyroid glands along with the ovaries and testes. The anterior lobe also generates prolactin which allows new mothers to produce milk. Then there is the intermediate lobe which releases a hormone that stimulates the cells that control pigmentation known as the melanocytes. Lastly, there is the posterior lobe

The pituitary gland is located in the brain at the base under the hypothalamus and is the size of a pea (BodyMaps). This gland is made up of three different sections, the anterior lobe, the intermediate lobe, and the posterior lobe (BodyMaps). Each one provides the body with various hormones which targets different internal organs. The anterior lobe sends out the following hormones: Adrenocorticotropic hormone, Thyroid-stimulation hormone, Folicile-stimulating hormone, luteinizing hormone, Prolactin, and Growth hormone (McMillan and Starr 290). These hormones help with promote the release of other hormones as well as the assist with production of the hormones for the reproductive organs such as the ovaries and testes (McMillan and Starr

The hypothalamus transmits nerve impulses that go through brain stem, spinal cord, and preganglionic sympathetic nerve fibers to adrenal medulla, then will

The hypothalamus is located just below the thalamus and is in control of regulating homeostasis within the body. It monitors states of rest, temperature, hunger, thirst, through the controlled release of hormones it maintains an internal balance; any shift out of balance results in diminished cognitive processes (Sousa, 2011). A child with autism for example, who is averse to sudden changes in environment, would likely respond erratically to a fire drill. This sudden change and over stimulus could result in an adrenaline response and sudden change in

Since the Hypothalamus is sensitive to the temperature of the surrounding blood begins a chemical reaction, triggering the sweat glands, allows the body release heat, thus cooling it back down to the preferred temp of 98 degrees. Regarding emotional stress, the Hypothalamus plays as vital role in acting on the pituitary gland. The athlete may lose sexual desire, appetite, and have hormone

The brain also contains deep structures within the brain one of these structures is called the pituitary gland, its function is to release hormones which control sexual development, respond to stress, fight disease, stimulate bone and muscle growth. It is attached to the hypothalamus of the brain near the pituitary stalk. Hypothalamus main function is to control different behaviors for example, thirst, sleep, hunger, as well as sexual response. Not only does it control behavior it also regulates blood pressure, secretion of hormones, body temperature, and emotions. Its specific location is in the third ventricle right next to the thalamus. The thalamus transmit most of the information that leaves and comes into the cortex. Which is why we can

Organs of the body, such as the heart, intestines, and stomach, are regulated by the autonomic nervous system.  The autonomic nervous system is known as the involuntary division of the nervous system which consists of autonomic neurons that innervates cardiac muscle, smooth muscles, and exocrine glands.  The autonomic nervous system plays an essential role to keep the internal environment of the body in proper balance, known as homeostasis.  Regulation of blood pressure, gastrointestinal responses to food, contraction of the urinary bladder, focusing of the eyes, and thermoregulation are just a few homeostatic functions that are regulated by the autonomic nervous system   There are two divisions: the sympathetic and parasympathetic nervous