8º Ano Ciências

One of the important hormones produced by the pituitary gland is the growth hormone. This hormone plays a crucial role in stimulating growth and development in children and adolescents. It also helps regulate metabolism and body composition in adults. Therefore, it is true that the growth hormone is of great importance and is produced by the pituitary gland.

The statement is true because the color of the skin is determined by the amount of melanin, a dark pigment that is produced by cells in the epidermis. Melanin is responsible for the variation in skin tones among individuals. The more melanin present in the skin, the darker the skin color will be.

The correct answer is NEURÔNIO. The question is asking for the name of the cells that form the neural system. Neurônios are the cells responsible for transmitting information in the nervous system. They receive and send electrical signals to other cells, allowing for communication and coordination within the body.

The given statement states that the organ mentioned is the largest and occupies almost the entire cranial box. Based on this information, the correct answer is the "CÉREBRO" (brain) as it is the largest organ in the neural system and occupies a significant portion of the cranial cavity.

The correct answer is "MICOSES". Micoses are fungal infections that usually cause round-shaped spots on the skin and are accompanied by itching. The question is asking for the term that describes these characteristics, and micoses fits the description.

The correct answer is "ENCÉFALO E MEDULA ESPINHAL". The central part of the neural system is formed by the brain (encéfalo) and the spinal cord (medula espinhal). These two structures are essential for the transmission and processing of nerve signals throughout the body. The pancreas is not part of the central neural system and is primarily responsible for producing digestive enzymes and regulating blood sugar levels.

The given answer "SISTEMA HORMONAL" is correct because it refers to a set of glands that secrete hormones directly into the bloodstream or lymphatic system. Hormones are chemical messengers that regulate various bodily functions and processes. This system controls and coordinates activities such as growth, metabolism, reproduction, and response to stress. The other options, "SISTEMA NEURAL" and "SISTEMA DIGESTÓRIO," do not involve the secretion of products into the bloodstream or lymph and are not directly related to the description provided.

The given statement states that the first cell of the body, called the egg cell, undergoes division and transforms into two daughter cells. This is true because during the process of fertilization, the egg cell combines with a sperm cell to form a zygote, which then undergoes cell division to form two daughter cells. Therefore, the statement is true.

A medula espinhal é um cordão neural que se localiza no interior da coluna vertebral. É responsável por transmitir os impulsos nervosos entre o cérebro e o resto do corpo, controlando funções motoras e sensoriais. A medula oblonga e a medula cerebral são estruturas diferentes que estão localizadas no cérebro, não na coluna vertebral. NDA significa "Não Disponível para Análise" e não é uma resposta correta.

Acne é uma condição de pele que ocorre devido à obstrução dos ductos onde a gordura é eliminada. Portanto, a afirmação de que a acne é causada pela obstrução desses ductos é verdadeira.

The correct answer is TIREOIDEA. The question asks for a gland located in the anterior part of the neck, and the thyroid gland fits this description. It is an endocrine gland responsible for producing and releasing hormones that regulate metabolism and growth. The parathyroid glands are also located in the neck, but they are not situated in the anterior part. The suprarenal glands, also known as adrenal glands, are located on top of the kidneys and are not in the neck area. NDA stands for "no data available" and is not a valid answer in this context.

The correct answer is "SISTEMA NEURAL" because the neural system receives information from both the organism itself and the external environment. It is responsible for processing and transmitting this information throughout the body, allowing for coordination of various bodily functions and responses.

The correct answer is "NERVO". The question is asking for the part of the central neural system that is formed by a bundle of neuron extensions. The options given are "MENINGES", "NERVO", "CÉREBRO", and "NDA". Out of these options, "NERVO" is the only one that fits the description given in the question. Therefore, "NERVO" is the correct answer.

The correct answer is "MUCOSA". The mucosa is the epithelial membrane that lines the internal organs and cavities of the body, including the respiratory, digestive, and reproductive systems. It secretes mucus and plays a role in protection, absorption, and secretion.

The correct answer is DIENCÉFALO. The hypothalamus is located in the diencephalon, which is a part of the brain. It is responsible for regulating various bodily functions such as temperature, hunger, thirst, and sleep. It also plays a role in controlling the release of hormones from the pituitary gland. The meninges are the protective membranes that surround the brain and spinal cord. The pons is a structure located in the brainstem, and NDA is not a relevant term in this context.

The correct answer is "MEDULA OBLONGA". The given options are "MEDULA OBLONGA", "MEDULA ESPINHAL", "HIPOTÁLAMO", and "NDA". The question is asking about the location of SITUA in relation to the MEDULA ESPINHAL. The MEDULA OBLONGA is located above the MEDULA ESPINHAL, making it the correct answer.

The correct answer is "CORPO CELULAR, DENDRITOS E AXÔNIO." The explanation is that a neuron consists of three main parts: the cell body (corpo celular), dendrites, and axon (axônio). The cell body contains the nucleus and other organelles, and it is responsible for the metabolic functions of the neuron. Dendrites are branching extensions that receive signals from other neurons and transmit them to the cell body. The axon is a long, slender projection that carries electrical signals away from the cell body and transmits them to other neurons or target cells.

The correct answer is "UNHA". It is made up of a substance called keratin and is located at the base.

The statement is false. Nervos não são três membranas que envolvem e protegem os órgãos da parte central do sistema neural. Os nervos são estruturas que fazem parte do sistema nervoso periférico e são compostos por feixes de fibras nervosas que transmitem impulsos elétricos entre o sistema nervoso central e outras partes do corpo.

The given statement is false. The coordination of all other functions in the organism is not carried out by the neural and reproductive systems. Instead, it is the nervous system that plays a major role in coordinating various functions in the body, such as movement, sensing, and responding to stimuli. The reproductive system, on the other hand, is responsible for the production of offspring and does not have a direct role in coordinating the functions of the organism.

The correct answer is "PARASSIMPÁTICO." This is because the question is asking about the pupil, which is controlled by the parasympathetic nervous system. The parasympathetic system is responsible for controlling rest and digestion, and it causes the pupil to constrict. The sympathetic system, on the other hand, controls the fight or flight response and causes the pupil to dilate.

The correct answer is "ADRENAIS". The question is asking for the name of two endocrine glands located above the kidneys. The adrenal glands, also known as the suprarenal glands, are situated on top of each kidney. They are responsible for producing hormones such as adrenaline, cortisol, and aldosterone, which play important roles in regulating various bodily functions.

The correct answer is "SUDORESE". Sudorese is a term used to describe the process of sweating or the production of sweat by the body. It is the correct answer because it directly relates to the elimination of sweat by the organism. The other options, suolificação, suodorese, and suolifar, are not valid terms and do not have any relation to the elimination of sweat.

The correct answer is "PONTE". The question is asking for the structure that is located above the medulla oblongata and below the cerebrum. The ponte, also known as the pons, is a part of the brainstem that connects the medulla oblongata and the midbrain to the cerebellum. It plays a crucial role in relaying signals between different parts of the brain and coordinating movement and balance.

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