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belka [17]
3 years ago
12

The stretch reflex in a skeletal muscle is initiated because of nerve impulses arising from an organ embedded in the muscle call

ed _________________.
Biology
1 answer:
labwork [276]3 years ago
6 0

Answer:

Muscle spindles

Explanation:

Muscle spindles are stretch receptors thst has both the sensory abd motor components ĺocated in the body of a muscle that basically signals on alterations in the muscle length. They transfer the length information to the central nervous system through the afferent nerve fibers. It fasten the motor neurons through the stretch reflex to prevent muscle stretch. Muscle spindles are sensory receptors that are majorly found in the muscle.

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The lower leg jolts when struck just below the kneecap. Our eyes blink shut when an object moves quickly towards our face. These
Lostsunrise [7]

I believe it's A. reflex reactions

5 0
3 years ago
Each ABO blood group is associated with the presence/absence of RBC antigens and the presence/absence of antibodies in the plasm
harina [27]

Answer:

a. Type O blood - No A or B antigens on RBCs-Anti-A antibodies in plasma-Anti-B antibodies in plasma

b. Type A blood - A antigen on RBCs- Anti-B antibodies in plasma

c. Type B blood - B antigen on RBCs- Anti-A antibodies in plasma

d. Type AB blood - A antigen on RBCs- B antigen on RBCs- Neither anti-A or anti-B in plasma

Explanation:

ABO blood grouping system represents multiple allelism which was discovered in humans by Karl Landsteiner. The blood group is determined by the presence or absence of A & B antigens and antibodies.

The 4 blood groups which exist in ABO system are O, A, B and AB. Also, allele A and B are co-dominant i.e. if they both will exist on the surface of an RBC then both will be equally expressed which implies that there will be no dominant or recessive allele.

Type O blood group has H antigen on the surface of RBC and has both the antibodies i.e. antibody A and B. The absence of antigens A and B makes it a universal donor.

Type A blood group has A antigen on RBC and has antibody B in the plasma.

Type B blood group has B antigen on RBC and has antibody A in the plasma.

Type AB blood group has both the antigens i.e. antigen A and B on RBC and does not have any antibody in the plasma which makes it a universal acceptor.

3 0
3 years ago
Which process do organisms use to store energy?
vodomira [7]
The process is respiration as many organisms store energy
7 0
3 years ago
Which of the following is considered a stressor in a marriage? A. Having financial trouble B. Having respect for each other C. S
Elenna [48]

Answer:

A

Explanation:

You have to pick something that is negative, something that you would like to have happen.

B is definitely not the answer. You like each other and have respect, that's the bare minimum for a good relationship.

C this one is kind of iffy. If you are playing bridge, that's one thing. If you are dancing too close and drinking, that's another.

D Feeling content. That's practically spells a good marriage.

A If money is a problem, the marriage likely is going to have problems.

3 0
2 years ago
Read 2 more answers
Among vertebrates, the unique feature of lampreys and hagfish is the ________.
daser333 [38]
Absence of jaws. Is the answer
8 0
3 years ago
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