Week 7

Question 1

Inhibiting an inhibitor creates excitation

Answer 1

Disinhibition

Question 2

Progressive, degenerative loss of motor control. characterized by shakes or tremors, “cogwheel” rigidity, and postural instability.

Answer 2

Parkinson’s disease

Question 3

Neurodegenerative genetic disorder that affects muscle coordination and leads to cognitive decline and psychiatric problems. characterized by jerky, random and uncontrollable movements (chorea).

Answer 3

Huntington’s disease

Question 4

A disorder characterized by difficulty guiding arms to targets, overreaching, and under reaching. Also characterized by staggering, portraying a “ drunken gait”

Answer 4

Cerebellar ataxia

Question 5

Motor neuron disease caused by degeneration of LMNs. Also characterized by rapid progressive weakness.

Answer 5

Amyotrophic lateral sclerosis (ALS)

Question 6

Composed of parallel patterns of proteins (sarcomeres)

Answer 6

Myofibrils

Question 7

What myofibrils are composed of

Answer 7

Sarcomeres

Question 8

A self awareness of where our body is and the force that is necessary to get it there

Answer 8

Proprioception

Question 9

The property of a system in which variables are regulated, so that internal conditions remain stable and relatively constant

Answer 9

Homeostasis

Question 10

Ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different

Answer 10

Thermoregulation

Question 11

Thirst produced by cellular dehydration

Answer 11

Osmotic thirst

Question 12

The ingestion of food, usually to provide heterotrophic organisms their nutritional or medicinal needs, particularly for energy and growth

Answer 12

Eating

Question 13

Time of day, sight/smell of food, social setting (hunger)

Answer 13

External cues

Question 14

Generated by our body when we are short on nutrients (hunger)

Answer 14

Internal cues

Question 15

A hormone manufactured in the stomach lining. The levels of this hormone increase in the body prior to eating, and then decline after eating. high levels of this hormone in the body make you crave high calorie food.

Answer 15

Ghrelin

Question 16

Made by adipose tissue. Tells the hypothalamus that we have enough fat, so we can eat less or stop eating.

Answer 16

Leptin

Question 17

Dopaminergic neurons originating in the VTA project to neurons within the nucleus accumbens of the ventral striatum

Answer 17

Mesolimbic pathway

Question 18

Conditions defined by abnormal eating habits that may involve either insufficient or excessive food intake to the detriment of an individual’s physical and mental health

Answer 18

Eating disorder

Question 19

Immoderate food restriction, inappropriate eating habits or rituals, obsession with having a thin figure, an irrational fear of weight gain, distorted body self-perception

Answer 19

Anorexia nervosa