Lab 11: Human Sensory Systems Flashcards Preview

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Flashcards in Lab 11: Human Sensory Systems Deck (25):
1

The human sensory system is comprised of two types of senses:

Somatic and special

2

__________ are specialized cells, or clusters of cells, that send information via afferent pathways to the brain.

Receptors

3

Five basic types of sensory receptors:

Mechanoreceptors, chemoreceptors, electromagnetic receptors, thermoreceptors, and pain receptors

4

Mechanoreceptors detect mechanical energy such as:

Pressure, touch, and sound

5

Human __________ contains large numbers of mechanoreceptors.

Skin

6

Chemoreceptors detect changes in chemical concentrations such as:

Smell and taste

7

Changes in __________ such as blood glucose levels are also detected by chemoreceptors.

Homeostasis

8

Electromagnetic receptors detect electromagnetic energy such as:

Light and electricity

9

__________ contains electromagnetic receptors.

Eyes

10

Thermoreceptors detect:

Heat and cold

11

Thermoreceptors located in the __________ detect changes in core body temperature and maintain thermoregulation.

Hypothalamus

12

Pain receptors are free nerve endings that detect:

Harmful conditions

13

Pain receptors are located both in:

The skin and within certain internal organs

14

All receptors perform the __________ function.

Same

15

Somatic senses are associated with:

Skin, muscle, viscera, and joints

16

Somatic senses are comprised of:

Mechanoreceptors, thermoreceptors, and pain receptors

17

Special senses are a product of:

Cephalization

18

The special senses are comprised of:

Electromagnetic sensors, chemoreceptors, and mechanoreceptors

19

Some receptors become less __________ if stimulus is constantly present.

Sensitive

20

Some receptors become less sensitive if stimulus is constantly present. These types of receptors are __________.

Phasic

21

The decreased responsiveness of the receptors is called:

Sensory adaptation

22

Receptors that either do not adapt to continuous stimulation or adapt very slowly are:

Tonic

23

__________ __________ are generally tonic in nature.

Pain receptors

24

Occur throughout the epidermis and are sensitive to light touch.

Meissner's corpuscles

25

Occur in the deep subcutaneous tissue of the hands, feet, genitals, tendons, muscles, etc. and are sensitive to heavy touch and vibration.

Pacinian corpuscles