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AP Psychology Videos 163 videos

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AP Psychology 2.5 Motivation and Emotion. Energy homeostasis is mostly controlled by the what?

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English Language

Transcript

00:00

We speak student! And here's your shmoop du jour, brought to you by, the brain. Which

00:07

is far too fatty, for some zombies, gluten-free brain. Alright energy homeostasis

00:12

is the ideal rate of energy consumption that helps maintain body weight and is

00:16

mostly controlled by the, what? And here are the potential answers.

00:21

[murdering] Alright some of these are pretty funny. The brain is the

00:27

main organ of the nervous system and it's found in all vertebrate and most [multiple choice and brain photo]

00:31

invertebrate animals and congressmen. Humans differ from most mammals, because

00:35

we have a much more developed cerebral cortex. This allows for better planning,

00:40

reasoning and abstract thought. Basically the reason we have zoos. So is

00:44

homeostasis controlled by B, the thalamus? Well the thalamus is involved in sensory

00:49

and motor signal relay, as well as the regulation of consciousness and sleep.

00:52

This is pretty important stuff, but it isn't what we're looking for in the [romans in coliseum]

00:55

question. Let's cross off B from our potential answers there. How about C,

00:59

the amygdala. The amygdala is an almond-shaped mass of cells, that is

01:02

involved in many of our emotions and motivations. It also determines what

01:06

memories are stored in your brain. So again pretty cool, but not what we are after. So

01:10

cross off C. But would it be D, the hippopotamus, a hippocampus, sorry.

01:14

The hippocampus, which is not a university for a certain African animal, actually

01:19

plays a major role in long-term memory and spatial navigation. Not regulating [two hippopotamuses]

01:23

homeostasis, so ditch D. Perhaps it E, the fornix. Well the fornix, despite

01:28

sounding like an underground punk rock band, is actually a bundle of nerves that

01:31

carry signals from the hippocampus to other parts of the brain. If we cross E

01:35

off our list then we're just left with yeah A, the hypothalamus. The hypothalamus

01:40

controls homeostasis in part, by controlling the metabolic rate. Basically

01:44

it tells you when to eat, when to stop eating and other stuff. Oddly enough our

01:48

hypothalamus seems to shut down whenever we eat sour patch kids. Like well

01:53

that might be just us. So the correct answer is A, hypothalamus. Well we've

01:57

learned about quite a few parts of the brain, in this lesson. Maybe next week [picture of a brain]

02:01

we'll discover the part, that keeps getting Katy Perry songs stuck

02:04

our head. Baby you're a firework. We didn't say we could sing. Gluten-free brains.

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