Anatomy and Physiology B/C

[Mr.Epithelium]

Let's get this started!

1. A nail punctures a man's foot up until the dermis. Name the layers of the skin first contacted by the nail to the last.

2. Which type of synovial joint provides the least range of movement?

3. Ca2+ binds to _____ to allow for a contraction to begin.
A. Myosin
B. Tropomyosin
C. Troponin
D. G-actin

[amk578]

Let's get this started!

1. A nail punctures a man's foot up until the dermis. Name the layers of the skin first contacted by the nail to the last.

2. Which type of synovial joint provides the least range of movement?

3. Ca2+ binds to _____ to allow for a contraction to begin.
A. Myosin
B. Tropomyosin
C. Troponin
D. G-actin

1. Stratum corneum > s. lucidum > s. granulosum > s. spinosum > s. basale > dermis
2. Synarthrosis?
3. C

[Mr.Epithelium]

Let's get this started!

1. A nail punctures a man's foot up until the dermis. Name the layers of the skin first contacted by the nail to the last.

2. Which type of synovial joint provides the least range of movement?

3. Ca2+ binds to _____ to allow for a contraction to begin.
A. Myosin
B. Tropomyosin
C. Troponin
D. G-actin

1. Stratum corneum > s. lucidum > s. granulosum > s. spinosum > s. basale > dermis
2. Synarthrosis?
3. C

1. Correct!
2. Ahh, synarthroses are the least movable general type of joint. Plane (gliding) joints are synovial joint with the least range of movement.
3. Yep!

[amk578]

1. What is the term for the actively growing region of finger/toenails?

2. The scapula can be classified as what kind of bone?
a. Long bone
b. Short bone
c. Flat bone
d. Irregular bone

3. Which type of cells in the perichondrium repeat cycles of division to make new cartilage tissue?

[Here]

1. What is the term for the actively growing region of finger/toenails?

2. The scapula can be classified as what kind of bone?
a. Long bone
b. Short bone
c. Flat bone
d. Irregular bone

3. Which type of cells in the perichondrium repeat cycles of division to make new cartilage tissue?

1. Nail sinus/nail root?
2. C, flat bone
3. Chondrocytes?

[amk578]

1. What is the term for the actively growing region of finger/toenails?

2. The scapula can be classified as what kind of bone?
a. Long bone
b. Short bone
c. Flat bone
d. Irregular bone

3. Which type of cells in the perichondrium repeat cycles of division to make new cartilage tissue?

1. Nail sinus/nail root?
2. C, flat bone
3. Chondrocytes?

1. Close, I was looking for the nail matrix. The root is like the fold in the epidermis near the bone of the finger, where the nail body grows out from. However, the matrix is where the cells are produced to become the nail plate.
2. Correct!
3. Not quite, the answer is chondroblasts, chondrocytes are basically the mature cartilage cells.
Your turn!

[Here]

1. Which type of fracture is most common in children?

2. Which layer of the epidermis includes Langerhans cells?
A. Stratum lucidum
B. Stratum basale
C. Stratum corneum
D. Stratum spinosum

3. What is the name for the tissue that groups muscle fibers into bundles?

[Mr.Epithelium]

1. Which type of fracture is most common in children?

2. Which layer of the epidermis includes Langerhans cells?
A. Stratum lucidum
B. Stratum basale
C. Stratum corneum
D. Stratum spinosum

3. What is the name for the tissue that groups muscle fibers into bundles?

1. Greenstick
2. D
3. Endomysium?

[Here]

1. Which type of fracture is most common in children?

2. Which layer of the epidermis includes Langerhans cells?
A. Stratum lucidum
B. Stratum basale
C. Stratum corneum
D. Stratum spinosum

3. What is the name for the tissue that groups muscle fibers into bundles?

1. Greenstick
2. D
3. Endomysium?

all good, except 3 is Perimysium (the endomysium surrounds an individual muscle fiber, while the perimysium groups a bunch of them together)

Your turn!

[Mr.Epithelium]

1. Which neurotransmitter is found inside of motor neurons?

2. Which of the following does not include any sections with myosin?
A. A band
B. H band
C. I band
D. M line

3. Which stage of the hair growth stage is the longest and the growing phase?
A. Catagen
B. Anagen
C. Telogen