Question

Exam review help?

Answer 1

Yew message me the Q.s or post hem here

Answer 2

Question 1 (Multiple Choice Worth 2 points)

(02.02 MC)

A surgeon removes a section of a body organ. Once removed, the muscle tissue continues to contract, even in the absence of nervous stimulation. The removed section likely came from the

heart
arm
spine
esophagus

Question 2 (Multiple Choice Worth 2 points)

(02.03 MC)

When a muscle receives a signal from the nerves around it, the signal travels down the cell's membrane in folds called t-tubules. What will happen next to continue the contraction process?

The sarcoplasmic reticulum releases its stored calcium.
Tropomyosin changes position on the actin filaments.
ATP molecules bind to the myosin heads and hydrolyze.
Calcium ions enter the sarcomere and attach to troponin.

Question 3 (Multiple Choice Worth 2 points)

(02.02 MC)

This diagram is split into three types of muscle tissue. Image A shows elongated muscle cells with tapered ends and a single nucleus per cell. Image B shows branched muscle cells that have a single nucleus per cell. Image C shows densely-packed, cylinder-shaped muscles cells with multiple nuclei per cell.

© 2014 Custom Medical Stock Photo

Where would muscle A in the image set most likely be found?
Lining of a tendon
Lining of the thigh bone
Lining of a heart ventricle
Lining of the intestines

Question 4 (Multiple Choice Worth 2 points)

(02.01 LC)

This diagram shows the anterior muscles of the upper body. There is an arrow pointing to the row of square shaped muscles on the anterior side of the abdomen.

© Image Courtesy of 3DScience.com 2013

Which muscle is identified in the image above?
Frontalis
Latissimus dorsi
Rectus abdominus
Trapezius

Question 5 (Multiple Choice Worth 2 points)

(02.01 LC)

Which letter is pointing to the triceps muscle?

This diagram shows the muscles of the human body. There are four labeled arrows (A-D). “A” is pointing to the triangular shaped muscle occupying the posterior side out to the shoulder and down the spinous process of the cervical and top thoracic vertebrae. “B” is pointing to the muscles that cover the shoulders and extend to the top of the arm. “C” is pointing to the muscles on the top of the posterior portion of the arm. “D” is pointing to the muscle that occupies the anterior side of the top of the arm.

© Image Courtesy of 3DScience.com 2013

A
B
C
D

Question 6 (Multiple Choice Worth 2 points)

(02.03 MC)

This diagram shows a sarcomere in the relaxed state. There are four, thick myosin filaments at the center of the sarcomere. The myosin filaments contain myosin heads on both of their ends. The ends of the myosin filaments overlap with actin filaments that protrude from both outer edges of the sarcomere. The H zone is the central region of the sarcomere where there are only myosin filaments. The A band contains the H zone and the areas where the ends of the myosin filaments overlap with the ends of the actin filaments. The I bands are the outermost areas of the sarcomere that contain only the actin filaments

© Image Courtesy of 3DScience.com 2013

How would the H-zone in a contracted sarcomere differ from that of a relaxed sarcomere?
The H-zone is narrower in a contracted sarcomere.
The H-zone is wider in a contracted sarcomere.
The H-zone is unchanged in a contracted sarcomere.
The H-zone contains both actin and myosin in a contracted sarcomere.

Question 7 (Multiple Choice Worth 2 points)

(02.02 MC)

The autonomic nervous system regulates involuntary events in the body. This part of the nervous system would, therefore, regulate which types of muscle tissue?

Cardiac and skeletal only
Cardiac and smooth only
Smooth and skeletal only
Cardiac, smooth, and skeletal

Question 8 (Multiple Choice Worth 2 points)

(02.03 MC)

In rigor mortis, the muscles contract hours after death due to a breakdown of the sarcoplasmic reticulum.

This is because the sarcoplasmic reticulum stores

acetylcholine, which triggers muscle contraction
calcium, which triggers muscle contractions
ATP, which prevents myosin from detaching from actin
tropomyosin, which prevents myosin from detaching from actin

Question 9 (Multiple Choice Worth 2 points)

(02.02 MC)

Which of the following correctly describes the appearance of muscle tissue used to voluntarily raise a person's arm?

Single-nucleus, non-striated, short cells
Single-nucleus, striated, branching cells
Multinucleated, non-striated, branching cells
Multinucleated, striated, long threadlike cells

Question 10 (Multiple Choice Worth 2 points)

(02.01 LC)

Which letter identifies one of the muscles in the quadriceps femoris?

This diagram shows the muscles of the human body. There are four labeled arrows (A-D). “A” is pointing to the large muscle occupying the most exterior muscle of the chest. “B” is pointing to the row of square shaped muscles on the anterior side of the abdomen. “C” is pointing to a long, ribbon-like muscle that runs from lateral to medial across the anterior side of the right thigh. “D” is pointing to the muscle that occupies the posterior side of the lower portion of the leg.

© Image Courtesy of 3DScience.com 2013

A
B
C
D

Answer 3

Sorry I took so long I was re typing them word for word

Answer 4

I'm going to have to get back to you later is it urgent? im really busy

try posting them one at a time people will reel less intimidated to answer them than in one big quiz

Answer 5

I guess the pictures messed up though

Answer 6

and no it's not urgent

Answer 7

If it isnt urgent ill work on them later Im just busy now

Answer 8

Alright thanks ☺

Answer 9

1. heart
2. The sarcoplasmic reticulum releases its stored calcium.
3. Lining of a heart ventricle
4. Rectus abdominus
5. C
6. The H-zone is narrower in a contracted sarcomere.
7. Cardiac and smooth only
8. calcium, which triggers muscle contractions
9. Multinucleated, striated, long threadlike cells
10. C

Answer 10

I forgot to post my answers for review lol

Answer 11

I think 8 is ATP choice C.
my dad said something about the actin miosin once but not crertain

Answer 12

Alright thanks!

Answer 13

I got them all correct except for 3 ☺

Answer 14

#3*