What are two symptoms of Huntington's disease?
Choose 2 answers.
Loss of voluntary movement
Numbness
Constipation
Urinary dysfunction
Visual dysfunction
Correct Answer : A,F
A. Loss of voluntary movement: Huntington's disease is a neurodegenerative disorder characterized by the progressive loss of voluntary movement, leading to difficulties in performing daily activities.
B. Numbness: Numbness is not typically associated with Huntington's disease, which primarily affects movement and cognitive function.
C. Constipation: While constipation can occur in many conditions, it is not a hallmark symptom of Huntington's disease.
D. Urinary dysfunction: Urinary dysfunction is not a primary symptom of Huntington's disease.
E. Visual dysfunction: Visual dysfunction is not typically associated with Huntington's disease.
F. Dyskinesia: Dyskinesia, or involuntary, erratic movements, is a hallmark symptom of Huntington's disease. It is one of the main motor symptoms observed in affected individuals.
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Related Questions
Correct Answer is C
Explanation
A. Rheumatoid arthritis also involves morning stiffness and symmetrical joint pain, but it typically affects smaller joints first (e.g., hands, wrists), and does not usually cause Heberden's and Bouchard's nodes, which are more characteristic of osteoarthritis.
B. Osteomalacia involves bone softening due to vitamin D deficiency and does not present with joint nodes or the type of stiffness described.
C. Osteoarthritis is a degenerative joint disease characterized by morning stiffness, limited range of motion, and joint pain that worsens with activity. Heberden's and Bouchard's nodes are specific to osteoarthritis, typically appearing on the fingers.
D. Rickets is a pediatric disorder caused by vitamin D deficiency, leading to bone deformities, but it does not cause the joint issues or nodes described.
Correct Answer is D
Explanation
A. Heterozygous refers to having two different alleles for a gene, one inherited from each parent.
B. Recessive refers to an allele that only expresses its trait if two copies are present (homozygous), but this term does not describe the inheritance pattern itself.
C. Dominant refers to an allele that expresses its trait even if only one copy is present, but again, this term does not describe the inheritance pattern.
D. Homozygous describes a gene when the same allele is inherited from both parents (e.g., AA or aa).
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