Ch 2 - Basic Exercise Science Flashcards Preview

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Flashcards in Ch 2 - Basic Exercise Science Deck (21):
1

Which term refers to a system of glands that secretes hormones into the bloodstream to regulate a variety of bodily functions and consists of host organs, chemical messengers and target cells?

Endocrine System

2

Which characteristic distinguishes type II muscle fibers from type I muscle fibers?

Decreased oxygen delivery

3

What is a characteristic of muscle spindles?

They are sensitive to change in length of muscle and the rate of that change.

4

Which is made up of upper and lower extremities as well as the shoulder and pelvic girdles & encompasses approximately 126 bones?

Appendicular Skeleton

5

What is primarily produced by ovaries in females & in small amounts in adrenal glands of males?

Estrogen

6

In the endocrine system, which secretes hormones such as corticosteroids and catecholamines in response to stress?

Adrenal gland

7

What is responsible for sensing distortion in body tissues & are located in muscles, tendons, ligaments and joint capsules?

Mechanoreceptors

8

Which of the following gland releases growth hormone during childhood up until puberty?

Pituitary gland

9

Which is true of Type 1, or slow twitch, muscle fibers?

They respond to pressure, acceleration, and deceleration of joints.

10

Which term refers to fibrous connective tissues that connect bone to bone and provides static and dynamic stability as well as input to the nervous system?

Ligaments

11

Which term refers to the motion of a joint?

Arthokinematics

12

Which is catabolic hormone secreted by adrenal glands & serves to maintain energy supply through the breakdown of carbs/fats/proteins?

Cortisol

13

According to sliding filament theory, when does muscular contracting occur?

Actin and myosin filaments slide past each other, shortening the entire sarcomere

14

Which of the following consists of a series of irregularly shaped bones divided into five different categories depending on where they are located in the backbone?

Vertebral column

15

Which gland produces the hormones (epinephrine and norepinephrine) that help prepare the body for activity and for the fight or flight response?

Adrenal

16

Which of the following is true of type I, or slow-twitch, muscle fibers?

They contain more capillaries, mitochondria, and myoglobin than type II muscle fibers.

17

Which systems accomplish human movement through their functional integration?

Muscular, nervous, and skeletal systems

18

Which mechanoreceptor helps prevent muscles from stretching too far or too fast?

Muscle Spindle

19

Which of the following is a characteristic of muscle spindles?

They are sensitive to change in length of muscle and the rate of that change.

20

Which of the following is a characteristic of joint receptors in the human body?

They respond to pressure, acceleration, and deceleration of joints.

21

The body's ability to differentiate between walking on concrete and walking on sand is an example of which of the following functions of the nervous system?

Sensory