Comprehensive Business Planning for Startups

What is the primary purpose of cookies on this website?

To make the site work as expected

What happens if you block functional cookies?

Some services may not function properly

What do social media cookies enable you to do?

Share content with your friends and networks

What kind of information do cookies store or retrieve?

Information related to you, your preferences, or your device Signup and view all the answers

Why do the website owners respect users' right to privacy?

Because they respect users' right to privacy Signup and view all the answers

What is the primary function of food energy in the body?

To operate various organs and perform external work Signup and view all the answers

What percentage of energy is used by the skeletal muscle and heart under resting conditions?

25% Signup and view all the answers

What is the concept that the body's energy is subject to?

The law of conservation of energy Signup and view all the answers

What percentage of food energy is lost in feces and urine?

5% Signup and view all the answers

What is the primary function of the liver and spleen in terms of energy usage?

To operate various organs Signup and view all the answers

What is the percentage of energy used by the brain under resting conditions?

19% Signup and view all the answers

What is the assumption made in the application of the first law of thermodynamics in the human body?

No food or drink is taken and no feces or urine is excreted during the interval of time considered Signup and view all the answers

What is the formula for power in physics?

P = Δw/Δt Signup and view all the answers

What does the equation Δu = ΔQ - Δw represent?

The change in stored energy in the body Signup and view all the answers

What happens to the stored energy in the body when it is not doing any work and is at a constant temperature?

It decreases Signup and view all the answers

What is the efficiency of the human body as a machine?

Usually around 20% Signup and view all the answers

What is the unit of energy value of food referred to by nutritionists?

Kilocalorie Signup and view all the answers

What is the maximum work capacity of the human body dependent on?

The rate of oxygen consumption in the working muscles Signup and view all the answers

What is the main characteristic of homeothermic animals such as birds and mammals?

They can control their body temperature despite environmental changes Signup and view all the answers

What is the rate of change of stored energy in the body equal to?

ΔQ/Δt - Δw/Δt Signup and view all the answers

What is the body's basic source of energy?

Food energy Signup and view all the answers

What happens to the body temperature of a deceased person after death?

It decreases at a predictable rate Signup and view all the answers

What can be estimated using the body temperature of a deceased person?

The time of death Signup and view all the answers

What is the normal human body temperature?

37°C Signup and view all the answers

What is the range of variation in body temperature for a single individual?

±0.5°C Signup and view all the answers

What is the name of the part of the brain that controls body temperature?

Hypothalamus Signup and view all the answers

What is the primary mechanism of heat loss after heavy exercise?

Evaporation Signup and view all the answers

What factor does NOT affect body temperature?

Eye color Signup and view all the answers

How does the body receive radiant energy from its surroundings?

Through radiation Signup and view all the answers

According to the equation, what is the value of Kc when the wind speed is 5 m/sec?

11.20 Signup and view all the answers

What is the primary mode of heat loss under normal temperature conditions and in the absence of hard work or exercise?

Radiation and convection Signup and view all the answers

How much heat is carried away when 1 liter of water evaporates from the body?

580 kcal Signup and view all the answers

What percentage of the body's heat loss is due to respiratory heat loss under typical conditions?

14% Signup and view all the answers

What is the amount of heat lost per hour due to perspiration, even if the body does not feel sweaty?

7 kcal/hr Signup and view all the answers

What is the special ability of the body in terms of heat regulation in the hands and feet?

To select the path of returning blood Signup and view all the answers