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shusha [124]
3 years ago
7

The birds that were eating at the bird feeder initially flew away when the shadow of Charlie’s kite passed over the feeder. Howe

ver, after Charlie had been flying the kite for 15 minutes, the birds had all returned and didn’t stop feeding when the kite passed overhead. The birds’ change in responsiveness illustrates the learning process known as:
a.sensitization
b.habituation
c.second-order conditioning
d.negative reinforcement
Biology
1 answer:
Igoryamba3 years ago
6 0

Answer:

B

The birds became used to the kite, and realized that it wasn't a threat.

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Which of the following is not a component of the hepatic triad found at the edges of a liver lobule?
goldenfox [79]

Answer: c) central vein.

Explanation:

The liver is an organ that is present both in humans and in vertebrate animals. It secretes the bile, essential for the digestion of fats, and it also has many other functions, including the synthesis of plasma proteins, storage of vitamins and glycogen and detoxifying function. It is responsible for removing various substances from the blood that may be harmful to the body, including alcohol, making them harmless.

The liver is divided by the sickle cell ligament into two main lobes, right and left. <u>There are two other smaller lobes, the square lobe and the caudate lobe</u>.

The hepatic triads are triangular areas located at the angles of the hepatic lobules, made up of a lax conjunctive stroma. <u>They contain a branch of the hepatic artery</u> (that irrigates the liver<u>),</u> <u>a hepatic portail vein</u> (a thick blood vessel that carries blood from the gastrointestinal tract and spleen to the liver so that nutrients are metabolized<u>)</u> and <u>a bile duct</u> (transports bile into the small intestine). Therefore, it does not contain a central vein.

5 0
3 years ago
Axons are classified into three major groups called A, B, and C, based on their ____________ . Group A has a conduction velocity
Viefleur [7K]

Answer:

1. Based on their physical features and conduction properties

2. 80m/s to 120m/s

3. Has both sensory fibers and motor fibers

4. Group B conduct at 3m/s to 15m/s

5. Group C conduct at 0.5m/s to 15m/s

6. They generally have low conduction velocity and are polymodal

Explanation:

Axons were know to have different thickness and this differences were thought to relate to the speed at which the action potential could travel. This hypothesis was proved by Erlanger and Gasser.

6 0
3 years ago
The striations in skeletal muscle fibers are attributable to
dexar [7]

Answer:

The arrangement of thin and thick filaments in myofibril.

Explanation:

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Thin filaments: Contains the actin protein which is coiled with filament nebulin.

Thick filaments: Contains the myosin protein. It is also known for force generation.

7 0
3 years ago
What did darwin call the "preservation of favorable variations and the elimination of injurious variations"?
Ksivusya [100]
I think the natural selection
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3 years ago
Why do different cells of the body have different structures or shaps?​
klasskru [66]

Answer:

Cells have different shapes because theydo different things. ... The shapes ofcells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does. Neurons are cells in the brain and nervous system.

4 0
2 years ago
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