LABS AND EXTRA PROGTEST1

Question 1

Radiation:

Answer 1

causes heat loss in the form of inferred rays. Electromagnetic.
• will radiate rays if not absolutely 0 temp
• 60% of heat is lost to radiation
• Body radiates heat to room and room radiates heat back - mostly from body tho

Question 2

Conduction:

Answer 2

Conduction: involves the transfer of heat to objects or media with which we are in contact
• not much is conducted to solid objects but a lot 15% is conducted to surrounding media
• One skin equal to air - no more transfer occurs

Question 3

Convection

Answer 3

Convection: involves the transfer of heat to air or water followed by the movement of air or water away from the skin which maintains the gradient for heat loss from the body

Question 4

Evaporation:

Answer 4

Evaporation: when water is evaporated from the body surface the heat energy requires to cause the water to evaporate is also lost. Even if a person is not swearing water will still evaporate in sensibly
• evaporation is particularly important in situations when the environmental temperature is greater then body temperature - in these circumstances the body will GAIN heat by radiation and conduction/convection and also sweating becomes the only mechanism by which the body can rid itself of heat

Question 5

Does body lose heat faster to water or air

Answer 5

Water

Question 6

Where are tactile corpuscles especially found

Answer 6

• papillary dermis
• hairless skin
• fingertips

Question 7

Structure of corpuscles

Answer 7

Spiralling / branching umyelinated sensory terminals surrounded by modified Schwann cells and then by a thin oval fibrous connective tissue capsule

Question 8

What are bulbous corpuscles sensitive to?

Answer 8

• sensitive to sustained deep pressure and stretching or distortion of the skin
• Important for signalling continuous states of deformation of the tissues such as heavy prolonged touch and pressure signals

Question 9

Why is eating and drinking prohibited in the hubs lab

Answer 9

• because it is a PC (physical containment) lab and there may be hazardous or pathogenic substances present

Question 10

Why are cellphones not allowed in labs

Answer 10

human tissue act prevents people from photographing human tissues as it was not conceited to when he bodies were donated.

Question 11

Answer 11

Question 12

Structure that separates thoracic cavity from the abdominopelvic cavity

Answer 12

Diaphragm

Question 13

Sections of the thoracic cavity

Answer 13

3 - two pleural cavities with lungs and mediasternum

Question 14

Names of the serous membranes associated with different structures

Answer 14

The lungs: pleura
The heart: pericardium
Some organs of the GI tract: peritoneum

Question 15

Function of the epithelium of the dermis

Answer 15

Protection

Question 16

Where else is stratified squamous epithelium found

Answer 16

Oral cavity and the asophagous

Question 17

No free nerve endings in the outer layer of epidermis

Answer 17

Yes

Question 18

The deeper you get in the dermis…

Answer 18

… the more firmly cells are held together

Question 19

Where are melanocytes found

Answer 19

Stratum basale

Question 20

Is it more dangourus to have meloma in the dermis or the epidermis

Answer 20

It is more dangerous to have a melanoma is the dermis then the epidermis. This is because the dermis is. not continually replaced like the epidermis and also because the dermis sits closer to the blood stream and lymphatics making it easier to metastasise

Question 21

What sensory fibres are found deep in the dermis

Answer 21

• lamellar
• bulbous
• free nerve endings

Question 22

Function of hair

Answer 22

• protection
• thermoregulation
• touch sensations

Question 23

Main function of sweat

Answer 23

Thermoregulation

Question 24

Where are eccrine most highly concentrated

Answer 24

Plans and soles

Question 25

What is the basic tissue type modifies to form sweat glands and sebaceous glands

Answer 25

Epithelium

Question 26

Main function of sweat

Answer 26

Thermoregulation

Question 27

Sensory and control centre for thermoregulation

Answer 27

Hypothalamus - peroptic

Question 28

Does core body temp change in exercise

Answer 28

No

Question 29

What happens during excerise to maintain core body temp

Answer 29

Sweating - evaporation of sweat is an exothermic process where heat is transferred from the skin to the environment
Due to vascular dialation at skin surface - red skin. Allows for rapid transfer of heat from core to the periphery and increased heat loss from the body to the environment through radiation, convection and conduction

Question 30

S hape of red b cell

Answer 30

• large SA:V ratio - efficient diffusion of gas
• some flexibility

Question 31

which artery branches to become the right subclaivian artery artery and right corotiod artery?

Answer 31

The brachiocephalic

Question 32

Places you can feel pulse

Answer 32

Places u can feel pulse:
• superficial temporal
• Carotid
• Radial
• Dorsalis pedis

Question 33

Why MAP is so essential

Answer 33

To maintain adequate perfusion of vital organs above and below the heart, such as the Brian, kidneys, lungs and the heart itself

Question 34

Eccrine

Answer 34

Exocrine secretions are secretions that are transported from inside of the body to the outside of the body (compared with endocrine secretions, which are transported into the bloo