Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
The hypophysis is more commonly referred to as the master gland because it regulates other glands within the body, such as the adrenal glands, ovaries, and thyroid. The hypothalamus is what throws signals to the hypophysis on when to inhibit and stimulate the assembly of hormones.
Pituitary or Pituitary Gland weighs about 0.5 grams, and its normal dimensions in humans are about 10 x 13 x 6 mm. This gland is in the sphenoid bone cavity - sella turcica -. During embryogenesis, the pituitary develops partly from oral ectoderm and partly from nerve tissue. The neural component arises as an evagination from the base of the diencephalon and grows toward the caudal as a trunk without breaking away from the brain.
The pituitary gland, or pituitary, is a gland that produces certain hormones that act as a controller for various aspects of the human body. Hormones produced by the pituitary help regulate growth, blood pressure, energy production and burning, and various other bodily functions.
Before the pituitary gland produces hormones, the brain will send signals from the hypothalamus as the center of communication between glands. After that, the gland will start producing which then acts as a signal for other glands and organs to regulate their function.
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Pituitary Gland brainly.com/question/812599
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Class: High School
Subject: Biology
Keywords: gland, hypophysis, pituitary
B. A whale has the ability to hold its breath for 20 minutes.
C. A fox's hair is white in the winter and brown in the summer.
D. A monkey has long arms that allow it to swing from one branch to another.
Answer:
a, bird builds its nest in the ash near a volcano
Explanation:
B) the internal pressure is less than atmospheric pressure.
C) the internal pressure is greater than atmospheric pressure.
D) the compliance of the lung decreases.
E) the lungs recoil.
Answer:
(B) the internal pressure is less than atmospheric pressure.
Explanation:
The process of respiration is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation). During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.
Hence, as the thoracic cavity increases in volume the lungs are pulled from all sides to expand, causing a drop in the pressure (a partial vacuum) within the lung itself. As such the internal pressure is less than atmospheric pressure.
During expiration, diaphragm contracts inferiorly and thoracic muscles pull the chest wall outwardly (the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases). As a result, the lungs contract and air is forced out.
During inhalation, air continues to move into the lungs until the internal pressure is the same is atmospheric pressure. Correct option is A.
During inhalation (inspiration), the diaphragm and other respiratory muscles contract, expanding the thoracic cavity. This expansion increases the volume of the lungs, leading to a decrease in the internal pressure within the lungs. As a result, the air from the surrounding atmosphere (which has higher pressure) flows into the lungs, filling them with fresh oxygen. Inhalation continues until the internal pressure in the lungs equals the atmospheric pressure, at which point the flow of air stops, and the lungs are filled with the appropriate amount of air for that particular breath. This process is essential for proper gas exchange, where oxygen is taken into the bloodstream and carbon dioxide is expelled from the body during exhalation (expiration).
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