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Vikki [24]
2 years ago
8

Describe the events happened during the stage of menstrual cycle.​

Biology
1 answer:
tatuchka [14]2 years ago
4 0

Answer:

The four phases of the menstrual cycle are menstruation, the follicular phase, ovulation and the luteal phase. Common menstrual problems include heavy or painful periods and premenstrual syndrome (PMS). Knowing when in the menstrual cycle a woman is most likely to conceive can increase the chance of pregnancy.

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The proximal end of the radius illustrates the relationship of form and function. The cup-like surface of the radial head articu
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<h2>The rotational motion of the forearm</h2>

Explanation:

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  • The Radius is larger in size than the Ulna.
  • Radius is prism shaped, little curved longitudinally long bone.
  • The part of two joints known as elbow and wrist comprised the Radius.
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3 years ago
State two ways in which palisade tissue is a dapted for thotosynthesis?<br>​
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Palisade mesophyll cells are closely packed to absorb the maximum light. They are at right angles to the surface of leaf to reduce the number of cross walls. Large vacuole pushes chloroplasts to the edge of a cell. Chloroplasts at edge enable short diffusion path for carbon dioxide and to absorb maximum light.
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True or false the enzyme maltese is secreted from the walls of the duodenum?​
VashaNatasha [74]

Answer:

It's True!!!!!!!!!!!!!!!!!!

7 0
3 years ago
Enclosed in a capsule
Zarrin [17]

Answer:

Benign tumors will grow in a contained area usually encapsulated in a fibrous connective tissue capsule.

<h3>Options E) is correct</h3>

Explanation:

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When a muscle cell contracts, Group of answer choices the position of each myosin head is identical at any given moment. some my
White raven [17]

Answer:

When a muscle cell contracts, the myosin heads each produce a single power stroke.

Explanation:

In rest, attraction strengths between myosin and actin filaments are inhibited by the tropomyosin. When the muscle fiber membrane depolarizes, the action potential caused by this depolarization enters the t-tubules depolarizing the inner portion of the muscle fiber. This activates calcium channels in the T tubules membrane and releases calcium into the sarcolemma. At this point, <em>tropomyosin is obstructing binding sites for myosin on the thin filament</em>. When calcium binds to the troponin C, the troponin T alters the tropomyosin by moving it and then unblocks the binding sites. Myosin heads bind to the uncovered actin-binding sites forming cross-bridges, and while doing it ATP is transformed into ADP and inorganic phosphate which is liberated. Myofilaments slide impulsed by chemical energy collected in myosin heads, <u>producing a power stroke</u>. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament.  Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin.  Z-bands are then pulled toward each other, thus shortening the sarcomere and the I-band, and producing muscle fiber contraction.

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