72 chromatids were present in the present in the primary oocyte during prophase 1 of meiosis.
The primary oocyte contains 72 chromatids during prophase 1 of meiosis as the mature ovum has 18 chromosomes.
The primary oocyte contains 72 chromatids , that means it contains 144 chromosomes. During the first meiotic division, it produces one secondary oocyte and one polar body.
The secondary oocyte has 72 chromatids, which again undergoes second meiotic division and produces mature ovum and second polar body . The mature ovum contains contains 36 chromatids which means it has 18 chromosomes.
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The correct answers are
a. vaginal ring and
c. oral contraceptives.The vaginal ring is a soft, plastic ring that releases a continuous dose of the hormones oestrogen and progestogen into the bloodstream and prevents pregnancy. Oral contraceptives are also drugs for preventing pregnacy and also contain combinations of the hormones estrogen and progestin )or progestin alone=. Estrogen and progestin inhibit the release of the hormones luteinizing hormone (LH) and follicle stimulating hormone (FSH) which have a role in the ovulation.
Answer:
Troponin
Explanation:
Myofilaments are found in myofibrils and comprises of thin and thick filaments. Thick filaments are majorly composed of myosin while thin filaments are mainly composed of actin protein.
More specifically thin filament is composed of three proteins known as actin, myosin and troponin. Sarcomere is known as the basic contractile unit and in vertebrates the contraction of striated muscles is mainly controlled by interaction of troponin and tropomyosin on actin filament.
On the stimulation from the nervous system the calcium ions are released from sarcoplasmic reticulum. The tropomyosin filament is moved on actin filament to uncover the surface for the binding of myosin head by the stimulation from calcium ion binding to troponin. This causes the contraction of sarcomere and it continues until the calcium ions are removed from sarcoplasmic reticulum.
It is called data, it is the detailing of the results in a column or chart so that it can be compared with other “data“.
Answer:
The answer somehow may true because sometimes pain killing medicines can provide relief of phantom limb pain and it is minimally invasive therapy.
Mechanism of pain killing medicine Tylenol:
Pain killing medicine Tylenol also called Acetaminophen. Acetaminophen fits to a class of drugs called analgesics (pain relievers) and antipyretics (fever reducers). The particular mechanism of action of acetaminophen is not known. It may reduce the production of prostaglandins in the brain. Prostaglandins are substances that cause inflammation and swelling. Acetaminophen dismisses pain by uplifting the pain threshold, that is, by necessitating a greater amount of pain to develop before a person feels it. It decreases fever through its action on the heat-regulating center of the brain. Specially, it tells the center to lower the body's temperature when the temperature is elevated.
Uses of Acetaminophen:
Acetaminophen is used for the release of fever as well as twinges and pains related with many conditions. Acetaminophen relieves pain in mild arthritis but has no effect on the primary inflammation, redness, and swelling of the joint.
Answer details:
Subject: Biology
Level: High school
Keywords:
• Pain killing medicines
• Tylenol or acetaminophen
• Uses of acetaminophen
• Mechanism of acetaminophen
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