Domanda del libro di testo
Differentiate between the arrangement of elements (load, fulcrum, and effort) in first-, second-, and third-class levers.
1050
views
Ch. 10 The Muscular System
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
Capitolo 10, Problema 19
a. Name the four muscle pairs that act in unison to compress the abdominal contents.
b. How does their arrangement (fiber direction) contribute to the strength of the abdominal wall?
c. Which of these muscles can effect lateral rotation of the spine?
d. Which can act alone to flex the spine?
Guida verificata passo dopo passo1
Step 1: Identify the four muscle pairs that compress the abdominal contents. These are the external oblique, internal oblique, transversus abdominis, and rectus abdominis muscles. Each pair is located on either side of the midline, working together to increase intra-abdominal pressure and stabilize the trunk.
Step 2: Understand the fiber direction of each muscle and how it contributes to abdominal wall strength. The external oblique fibers run diagonally downward and medially, the internal oblique fibers run perpendicular to the external oblique (upward and medially), the transversus abdominis fibers run horizontally, and the rectus abdominis fibers run vertically. This multi-directional arrangement provides a strong, supportive, and flexible abdominal wall capable of resisting forces from various directions.
Step 3: Determine which muscles contribute to lateral rotation of the spine. The external oblique and internal oblique muscles, due to their diagonal fiber orientation, can contract on one side to rotate the spine laterally (twisting the torso).
Step 4: Identify which muscle can act alone to flex the spine. The rectus abdominis, with its vertical fibers running along the midline, is primarily responsible for flexing the spine when it contracts bilaterally.
Step 5: Summarize the functional roles: the four muscle pairs work together to compress and stabilize the abdomen; the obliques contribute to lateral rotation; and the rectus abdominis is the main muscle for spinal flexion when acting alone.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Muscle Pairs of the Abdominal Wall
The four main muscle pairs that compress the abdominal contents are the external oblique, internal oblique, transversus abdominis, and rectus abdominis. These muscles work together to provide support, protect internal organs, and assist in movements like flexion and rotation of the trunk.
Video consigliato:
3:30
The Uterine Wall
Fiber Direction and Abdominal Wall Strength
The different fiber directions of the abdominal muscles—external oblique fibers run downward and medially, internal oblique fibers run upward and medially, and transversus abdominis fibers run horizontally—create a crisscross pattern. This arrangement enhances the strength and stability of the abdominal wall by distributing forces evenly and resisting pressure from multiple directions.
Video consigliato:
03:47Anatomical Terms Review
Muscle Actions: Lateral Rotation and Flexion of the Spine
The internal and external oblique muscles contribute to lateral rotation of the spine by contracting on one side, twisting the trunk. The rectus abdominis primarily acts alone to flex the spine forward, such as during a sit-up, by pulling the rib cage toward the pelvis.
Video consigliato:
5:41Muscle Actions
Pratica correlata
Domanda del libro di testo
Name four criteria used in naming muscles, and provide an example (other than those used in the text) that illustrates each criterion.
1410
views
Domanda del libro di testo
Name two muscles in each of the following compartments or regions:
a. thenar eminence (ball of thumb)
b. posterior compartment of forearm
c. anterior compartment of forearm—deep muscle group
d. anterior muscle group in the arm
e. muscles of mastication
982
views
Domanda del libro di testo
a. Name two forearm muscles that are powerful extensors and abductors of the hand.
b. Name the sole forearm muscle that can flex the distal interphalangeal joints.
1113
views
Domanda del libro di testo
Name two muscles in each of the following compartments or regions:
f. Third muscle layer of the foot
g. Posterior compartment of leg
h. Medial compartment of thigh
i. Posterior compartment of thigh
1062
views
Domanda del libro di testo
When Mrs. O'Brien returned to her doctor for a follow-up visit after childbirth, she complained that she was incontinent (having problems controlling her urine flow) when she sneezed. The physician asked his nurse to give Mrs. O'Brien instructions on how to perform exercises to strengthen the muscles of the pelvic floor. To which muscles was he referring?
1043
views