PHA1500 Structure and Function of the Human Body
Module 3 Reflection Assignment
Directions: Save this document to your computer. Answer all questions below and
upload the completed document before the assignment due date. Refer to the
rubric for grading criteria.
Short Answer Questions
Directions: For each short answer question, please type your response below the
question.
1. Every organ in the body helps the body maintain homeostasis. What is
one way that the skin helps the body maintain homeostasis? What is
one way that the muscular system helps the body maintain
homeostasis? What is one way the skeletal system helps the body
maintain homeostasis?
One way that the skin helps the body maintain homeostasis is through
thermoregulation. The skin cools the body down by releasing sweat.
One way that the muscular system helps the body maintain
homeostasis is by generating heat through skeletal muscle
contractions. When the body is cold, muscles shiver and releases
metabolic energy to bring the core temperature back to the stable
range. One way the skeletal system helps maintains homeostasis is by
regulating blood calcium levels. Bones act as a reservoir, storing or
releasing calcium into the bloodstream based on the body's needs.
2. How do the muscles and bones work together to produce movement in
the body?
, Muscles and bones work together by having the brain signal the
muscles to contract. The muscles which is attached to bones by
tendons pull on the bones to create movement. Muscles work in pairs
to pull bones back and forth.
3. In your own words, explain the process of muscle contraction. Be sure
to include what happens between actin and myosin during this process.
Muscle contraction is the process of force through the sliding filament
mechanism. This mechanism is where the actin filaments slide over
the myosin filaments shortening the sarcomere. This triggers by a
nerve signal. Myosin then bind to actin, pull it inward, and detach
using energy from ATP to repeat the cycle.
Drawing Prompts
For each drawing prompt below, take a photo of your hand-drawn image. Paste the
image into the space below the corresponding prompt.
4. Draw a cross section of the skin. Include both the dermis and epidermis.
Include and label each of the following structures:
a. Arrector pili muscle
b. Blood vessels
c. Dermis
d. Epidermis
e. Hair root
f. Hair shaft
g. Hypodermis
h. Nerve endings
i. Sebaceous gland
Module 3 Reflection Assignment
Directions: Save this document to your computer. Answer all questions below and
upload the completed document before the assignment due date. Refer to the
rubric for grading criteria.
Short Answer Questions
Directions: For each short answer question, please type your response below the
question.
1. Every organ in the body helps the body maintain homeostasis. What is
one way that the skin helps the body maintain homeostasis? What is
one way that the muscular system helps the body maintain
homeostasis? What is one way the skeletal system helps the body
maintain homeostasis?
One way that the skin helps the body maintain homeostasis is through
thermoregulation. The skin cools the body down by releasing sweat.
One way that the muscular system helps the body maintain
homeostasis is by generating heat through skeletal muscle
contractions. When the body is cold, muscles shiver and releases
metabolic energy to bring the core temperature back to the stable
range. One way the skeletal system helps maintains homeostasis is by
regulating blood calcium levels. Bones act as a reservoir, storing or
releasing calcium into the bloodstream based on the body's needs.
2. How do the muscles and bones work together to produce movement in
the body?
, Muscles and bones work together by having the brain signal the
muscles to contract. The muscles which is attached to bones by
tendons pull on the bones to create movement. Muscles work in pairs
to pull bones back and forth.
3. In your own words, explain the process of muscle contraction. Be sure
to include what happens between actin and myosin during this process.
Muscle contraction is the process of force through the sliding filament
mechanism. This mechanism is where the actin filaments slide over
the myosin filaments shortening the sarcomere. This triggers by a
nerve signal. Myosin then bind to actin, pull it inward, and detach
using energy from ATP to repeat the cycle.
Drawing Prompts
For each drawing prompt below, take a photo of your hand-drawn image. Paste the
image into the space below the corresponding prompt.
4. Draw a cross section of the skin. Include both the dermis and epidermis.
Include and label each of the following structures:
a. Arrector pili muscle
b. Blood vessels
c. Dermis
d. Epidermis
e. Hair root
f. Hair shaft
g. Hypodermis
h. Nerve endings
i. Sebaceous gland
