What organ stores concentrated bile produced by the liver?

Answer:

The normal ejection fraction of heart is 55% to 75%

Explanation:

Ejection fraction may be defined as the amount of blood pumped in the left and right ventricle  during the normal heart beat. The main pumping chamber of heart is left ventricle.

55% to 75% is the normal ejection fraction of the heart. The normal ejection fraction of heart refers the normal pumping ability of heart. The ejection fraction range below or above the normal may indicate the improper functioning of heart.

The normal ejection fraction (EF) of the heart ranges from 55-70 percent, representing the percentage of blood pumped out of the ventricles with each contraction. EF is calculated as (SV / EDV) ×100. Assessing EF is important for diagnosing and monitoring heart function.

The ejection fraction (EF) is a measurement used to assess how well the heart is pumping blood. It refers to the percentage of blood that is pumped out of the heart's ventricles with each contraction.

Answer:

See below

Explanation:

Dominance:  One trait is dominant to another, this trait is expressed.  For example: DD - two (identical) dominant traits, dominant trait expressed.  Dd - One dominant trait, dominant trait is still expressed.  dd - recessive traits, this is the only case where a recessive trait can be expressed since there is no dominant trait to block it.  

This is what happens most of the time, with some exceptions (explained below)

However:

Co-dominance: Two dominant traits, both are expressed.  For example, this is seen in the roan coat color in animals such as cattle and horses.  Both the red and white coat colors of the parents are expressed (the coat visibly contains both red and white)

Incomplete dominance: The dominant trait doesn't completely override the recessive trait.  For example, this is seen in some types of flowers.  Imagine the parent plants of a plant produce red and white flowers respectively, but the plant that they produced has pink flowers.  Incomplete dominance results in a "blending", but neither trait is fully expressed

Hope this helps!

Source: this is very similar to how my biology teacher explained it.  

Answer:

1. Dominance (complete dominance) would be a case in which 1 allele is always dominant over the other(s).

Example: we could see this clearly when breeding to homozygous dominant organisms (offspring are always dominant).

2. Co-dominance would be a case in which a combination of alleles is always dominant over the other combination(s).

Example: we could see this when breeding to dalmatian dogs, where both black and white colours are dominant.

3. Incomplete dominance would be a case in which it is not a fully dominant allele but it is still more dominant than the other allele(s).

Example: we could see this when breeding a red (dominant) and white (recessive) rose. The outcome will be pink, because red isn't dominant enough to make the outcome red.

Hope it helped,

BiologiaMagister

Answer:

Orbicularis oris

Explanation:

Orbicularis oris muscle is present in the lips. These muscles may lie horizontally or vertically with other muscles.

Orbicularis oris is the circular muscle that encircles the mouth. This muscle is also known as kissing muscle. Orbicularis oris muscle originates from the maxillae and mandible and innervated by the facial nerve. This muscle inserts in the lips margin.

Thus, the correct answer is option (B).

Answer:

(C). calcitriol.

Explanation:

PTH (parathyroid hormone) is a peptide hormone, synthesized and secreted by parathyroid glands. It helps in regulation of calcium level in blood by affecting intestine, bones, and kidneys.

PTH increases blood calcium by promoting synthesis of calcitriol hormone, which represents an active form of vitamin D.

Calcitriol increases calcium level in blood by increasing calcium absorption in intestine, increasing calcium reabsorption in kidneys, decreasing calcium, and by activating osteoclats (bone cells) to release calcium.

Thus, the correct answer is option (c).

PTH integrates with the kidneys to promote the formation of calcitriol (the active form of Vitamin D). This process boosts the absorption of calcium from the food we eat, aiding in maintaining calcium homeostasis.

PTH (parathyroid hormone) primarily integrates with the kidneys to promote the formation of calcitriol, which is essentially the active form of Vitamin D. The process works in a way that PTH signals the kidneys to convert inactive vitamin D into calcitriol. Consequently, calcitriol works in the body to increase the absorption of calcium from the food we eat, which collaborates with PTH to maintain calcium homeostasis in the blood. So the correct option is C. calcitriol.

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Answer:

15 percent

Explanation:

Lymphatic vessels recover about  15 percent of the fluid filtered by capillaries. In addition, these vessels contain white blood cells that fight infections.

Lymphatic vessels recover approximately 15% of the fluid filtered by capillaries, which amounts to about 3.6 liters out of the 24 liters filtered daily.

Lymphatic vessels recover about 15% of the fluid filtered by capillaries. This process is a critical function of the lymphatic system, ensuring that plasma and other substances that have exited the cardiovascular system are returned to the circulation. Considering all the capillaries over the course of a day, approximately 24 liters of fluid are filtered from the capillaries into the interstitial space, of which 20.4 liters are reabsorbed by the blood capillaries.

The remaining fluid, which amounts to about 3.6 liters (15% of 24 liters), is then picked up by the lymphatic capillaries. The lymphatic capillaries have a unique structure with loosely fitted cells that allow them to absorb the excess interstitial fluid and transport it back into the venous blood circulation via the subclavian veins.

The semimembranosus is not part of the quadriceps group. The quadriceps group includes rectus femoris, vastus medialis, and vastus lateralis. The semimembranosus is actually a hamstring muscle.(Option d)

The quadriceps and hamstring muscle groups play essential roles in the complex coordination of leg movement and stability. The quadriceps, composed of the rectus femoris, vastus medialis, and vastus lateralis, are primarily responsible for knee extension and contribute significantly to activities such as walking, running, and jumping. Situated in the anterior thigh, the quadriceps provide crucial support and power during various lower limb movements.

In contrast, the semimembranosus, part of the hamstring trio along with the semitendinosus and biceps femoris, is positioned at the posterior aspect of the thigh. The hamstrings play a vital role in hip extension and knee flexion, complementing the actions of the quadriceps and contributing to the overall balance and stability of the leg. This interplay between the quadriceps and hamstrings is integral to the smooth execution of a wide range of physical activities, highlighting the intricacies of musculoskeletal function in the human body.

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Answer:

Ach/NE

Explanation:

Autonomic nervous system is divided into sympathetic nervous system and para sympathetic nervous system. Sympathetic nervous system controls the emergency response of the body.

Acteylcholine is used as a neurotransmitter for the cholinergic receptors of the sympathetic nervous system.  Norepinephrine is used as a neurotransmitter for adrenergic receptor for the sympathetic division of autonomic nervous system.

Thus, the correct answer is option (C).

Answer:

c.Ach/NE

Explanation:

The sympathetic division uses Ach as a neurotransmitter for cholinergic receptors and NE for adrenergic receptors.

Answer:

Left side of brain

Explanation:

Stroke is an injury caused to brain. As brain is the main part of the body, it controls everything; communicating, eating, walking etc. Stroke can cause damage to communications if the left part of the brain is damaged, as this side is associated with communication and language. That is why the person with stroke does not speak clearly in response.

Answer:

E... 126

Explanation:

The appendicular skeleton includes all bones of the upper and lower limbs, plus the bones that attach each limb to the axial skeleton. There are 126 bones in the appendicular skeleton of an adult