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pashok25 [27]
3 years ago
7

1. Muscles move tendons attached to bone by performing an action called _______.

Biology
1 answer:
REY [17]3 years ago
5 0

1. Contraction

2. Actin

3. Tendons

4. Epidermis

5. Dermis

6. Acne

7. A nerve signal from the brain arrives at the intersection of the nerve and muscle cells and releases acetylcholine from the neuron. This triggers chemical changes in the muscle cell involving ions, including Ca2+. Calcium triggers the thick filaments, made of myosin, to attach to the thin filaments, made of actin, in the muscle cell, and the myosin pulls the actin toward the center of the muscle cell. ATP causes the release of the actin fibers, allowing the muscle to relax and the process to begin again.

For Penn Foster.

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lakkis [162]

Answer:it’s A

Explanation:

4 0
3 years ago
Each kidney contains ____ of nephrons. Each is _____ but extremely _____, much like a neuron(but shorter).
Naddika [18.5K]

Answer:

One million.

Explanation:

Each kidney contains about one million of nephrons. The nephron is the structural and functional unit of the kidney means that our kidney is made up of nephrons. The main function of nephron is to produces urine in the process of removing waste, toxic and excess substances from the blood. kidney is responsible for the filtration of blood by removing all the waste materials and taken these waste materials to the excretory organs in order to remove from the body.

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3 years ago
A_____is a group of the same kind o living things in an ecosystem.
rewona [7]
<em>A<u> population </u>is a group of the same kind of living things in a ecosystem.</em>

<em>~I hope this helps! ;)</em>
4 0
3 years ago
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Visual Check
aksik [14]

Answer:

They should all have purple flowers.

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Hope this helps! :)

8 0
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Identify three herbivores and carnivores from finding nemo
Minchanka [31]
<span>Okay, so herbivores are animals that feed on plants, so in Finding Nemo, those would be Bubbles (a yellow tang), the turtles, and Dory (a blue tang). On the other hand, carnivores are all animals that eat meat in order to survive, so in this cartoon, those animals would be primarily the sharks: Chum (a maiko shark), Bruce (a great white shark), and Anchor (a hammerhead shark). </span>
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